Fashion Faceoff: Jennifer vs. Julianne

JENNIFER VS. JULIANNE

Tights or no tights? Hat or no hat? For a performance or a red carpet? These are the earth-shattering questions you need to ask yourself before voting for Jennifer or Julianne in this Peter Pilotto design.

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Fashion Faceoff: Jennifer vs. Julianne

JANUARY VS. HILARY

Males of all ages (see: January's son and Hilary's husband) agree: This Heartloom sweater makes for a great outfit with skinnies and boots.

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Fashion Faceoff: Jennifer vs. Julianne

KE$HA VS. ELLEN

Despite how differently the two stars style their Joe's Jeans button-downs, the singer and the actress have one big thing in common: They both look like they walked straight off the pages of an Urban Outfitters catalog.

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Fashion Faceoff: Jennifer vs. Julianne

ISLA VS. BAR

Tie-dye: Not just for summer days at the beach. The actress and the supermodel bring the print into fall via this Gypsy 05 dress.

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Fashion Faceoff: Jennifer vs. Julianne

CIARA VS. RITA

You may think wearing a printed turtleneck mini is a bold move. But these singers have a different definition of the word bold, as proven by the fact that they pair the Emilio Pucci stunner with even more over-the-top footwear.

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Fashion Faceoff: Jennifer vs. Julianne

KIM VS. JENNIFER

On Wednesdays we wear pink and on Fridays Kim and Jennifer wear gray Donna Karan dresses. (At least they did last Friday.)

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Fashion Faceoff: Jennifer vs. Julianne

ANGELINA VS. HAILEE

We really wish they were both wearing Hailee's Kenzo eye-print dress (seriously, could you imagine Angie in a mini like that?). But alas, it's their lace illusion Christian Louboutin booties that match.

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Fashion Faceoff: Jennifer vs. Julianne

LILY VS. KRYSTEN

That's not a plush throw blanket draped around the actresses' shoulders. It's a faux fur Minkpink topper! And as you can see, the coat works with black pants or a skirt.

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Fashion Faceoff: Jennifer vs. Julianne

ISLA VS. SARAH JESSICA

No, we're not pitting Isla's and SJP's kids against each other (we would never!). We're just asking you to make the call on which mom styles her Blank NYC patchwork jeans better.

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Fashion Faceoff: Jennifer vs. Julianne

EMMY VS. JULIANNE

First vote on how you prefer your wine-colored skinnies – with a moto topper and boots like Emmy or a chunky sweater and flats like Julianne. Then buy the exact pair from Old Navy and get in on this Faceoff.

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Fashion Faceoff: Jennifer vs. Julianne

DIANE VS. KATE

Regular women spend 20 bucks on pajama tops and wear them to bed. But these two are no regular women. They drop major cash on 10 Crosby Derek Lam button-downs and wear them with denim in public.

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Fashion Faceoff: Jennifer vs. Julianne

KATIE VS. LEANN

A leather bomber and jeans go together like Miley and twerking, so it makes sense that both stars (despite their very dissimilar aesthetics) pair the striped EACH x OTHER topper with denim bottoms.

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Fashion Faceoff: Jennifer vs. Julianne

SELENA VS. ANALEIGH

Jumpsuits and overalls have faced off here before, but this is the first we're seeing a denim romper vs. a denim romper! Selena gives her Joe's Jeans onesie a sexy vibe by rolling up the shorts and unbuttoning the top, but Analeigh goes laid-back by wearing it over a graphic tee.

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Fashion Faceoff: Jennifer vs. Julianne

ADRIENNE VS. MARISA

Very different curves, one sexy way to show them off. The two ladies flaunt what they're working with in the same sheer-striped Catherine Malandrino dress, even coordinating their hand-on-hip stances.

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Fashion Faceoff: Jennifer vs. Julianne

M.I.A. VS. SALMA

Let's face facts: Anyone would look cool in these crackled Balenciaga shades. But do you prefer them with a hooded pleather rain slicker on the rapper or a coordinating dress and bling-y earrings on the actress? Decisions, decisions.

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Fashion Faceoff: Jennifer vs. Julianne

JENNIFER VS. JENNIFER

They sing. They act. They've both been on the American Idol stage. They have the same name. And now they have one more thing in common: They both have this printed Christopher Kane mini hanging in their closets.

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Fashion Faceoff: Jennifer vs. Julianne

ALESSANDRA VS. HILARY

These are definitely mom's-night-out jeans. Because – whether paired with a cream topper or a sheer black shirt – these gray Denim of Virtue skinnies covered in spikes probably shouldn't be worn around children.

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Fashion Faceoff: Jennifer vs. Julianne

BELLA VS. BEHATI

If these two photos were in "Second Look" at the back of PEOPLE, we're pretty sure it wouldn't take most people too long to spot the difference: Bella sports her Blumarine mini with matching trousers, but the supermodel does as supermodels do and goes sans pants.

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Fashion Faceoff: Jennifer vs. Julianne

LIZZY VS. BRYCE

Double-breasted navy blazers with gold buttons: not just for sea captains. Lizzy pairs the Juicy Couture jacket not with a pipe, but rather jeans and boots. Meanwhile, Bryce keeps it nautical with a blue-and-white striped dress.

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Fashion Faceoff: Jennifer vs. Julianne

VICTORIA VS. CAREY

Shirt or no shirt? The designer wears a black blouse underneath the split-sleeve blazer from her line (which kind of looks like a cape). Carey skips the top in favor (we assume) of double-stick tape and puts her décolletage on display.

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Fashion Faceoff: Jennifer vs. Julianne

RIHANNA VS. STACY

In RiRi's world, these bold J Brand bottoms require an even bolder topper (re: her black-and-white checkered Saint Laurent moto jacket). On the safe side of the style spectrum, Stacy teams the same coated skinnies with a solid black blazer and graphic tee.

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Fashion Faceoff: Jennifer vs. Julianne

DOUTZEN VS. OLIVIA

Requirements for wearing this sheer-paneled Theyskens' Theory dress: nude shoes, minimal jewels, loose waves and a bod that would stop traffic. Doutzen and Olivia clearly nail all four.

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Fashion Faceoff: Jennifer vs. Julianne

JAMIE VS. OLIVIA

If these ladies were competing in a "Best Glow" competition, we'd be totally stuck, because they both look radiant in this printed Parker mini. Jamie wears hers with ankle-strap sandals and side-swept curls, while Olivia goes for platform pumps and a pony.

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Fashion Faceoff: Jennifer vs. Julianne

SARAH VS. JORDIN

Who's the princess of this Alice + Olivia peplum dress: the Modern Family star in the navy version with black peep-toes, or the singer in the red version with matching pumps?

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Fashion Faceoff: Jennifer vs. Julianne

PARIS VS. SELENA

Two things are required to wear these Jimmy Choo cage boots: sunscreen (imagine the tan lines!) and a budget the size of a Hilton sister's or a multiplatinum superstar's (because the shoes cost over 2,000 bucks).

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Fashion Faceoff: Jennifer vs. Julianne

OLIVIA VS. ASHLEY

Tied or untied? Desert boots or sandals? These are the very important questions you should be asking yourself before deciding between the two actresses in this printed Ella Moss maxi.

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Fashion Faceoff: Jennifer vs. Julianne

ROSIE VS. ALYSSA

We could say that making the call on this Faceoff is all about choosing which shoes (gold python or yellow) and hairstyle (beachy waves or pompadour) go best with this Stella McCartney jumpsuit, but let's be honest: It really comes down to how much skin you prefer to see under those cutouts.

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Fashion Faceoff: Jennifer vs. Julianne

CHLOË VS. JESSICA

Apparently both actresses believe their Westward Leaning "Color Revolution" sunnies with neon-green lenses provide all the color their outfits need since they both pair them with otherwise monochromatic looks.

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Fashion Faceoff: Jennifer vs. Julianne

ALESSANDRA VS. KOURTNEY

For many moms, a casual outfit means jeans and a tee. For these Hollywood moms, it equals this floral Ella Moss romper. The supermodel goes easy on the add-ons, heavy on the skin-baring, while the reality star adds a floppy hat and hot-pink cardi.

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Fashion Faceoff: Jennifer vs. Julianne

SAOIRSE VS. JENNIFER

We already know 68% of you are obsessed with the lace heel trend. Now we want to know how you think these Nicholas Kirkwood shoes should be worn: with a bold printed dress like Soairse's Mary Katrantzou one or a white skirt and crop top as J.Law selects.

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Fashion Faceoff: Jennifer vs. Julianne

HEIDI VS. TAYLOR

We get it: It's hard to focus on anything except, well, you know. But try to concentrate and decide whether this sequin KaufmanFranco design look better with an updo and strappy sandals on the supermodel or loose waves and platforms on the singer.

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Fashion Faceoff: Jennifer vs. Julianne

FREIDA VS. JESSICA

Same top. Totally different bottoms. Freida pairs her colorful Zadig & Voltaire shirt with yellow skinnies, while Jessica goes for green cargo pants (not jeans, Jess?!). What the actresses both seem to agree on: neutral sandals.

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Fashion Faceoff: Jennifer vs. Julianne

KRISTEN VS. EMILY

Looks like there is only one way to wear these gray James Jeans skinnies: with a white top, Cons and hipster shades. It's what all the cool kids are doing (a.k.a. Kristen and Emily).

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Fashion Faceoff: Jennifer vs. Julianne

HAYDEN VS. NICKI

We would have preferred a sing-off between the Nashville star and the rapper. But we'll happily take a style-off featuring their printed second-skin Alexander McQueen minis and red pointy-toe shoes.

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Fashion Faceoff: Jennifer vs. Julianne

RITA VS. NICOLE

We're not surprised that these style risk-takers selected the same cleavage-baring Emilio Pucci jumpsuit. But the fact that they both paired it with velvet accessories (a navy baseball cap for Rita and Nicole in blue Louboutin pumps) is something no one could have predicted.

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Fashion Faceoff: Jennifer vs. Julianne

MIRANDA VS. FAITH

This paisley-printed Skaist Taylor maxi can be dressed down for mommy duty (ahem, model mommy duty) as Miranda demonstrates or dressed up for work (when work equals a red carpet because you're a country queen).

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Fashion Faceoff: Jennifer vs. Julianne

LOUISE VS. MOLLY

When these preppy LOFT pants become part of your fall wardrobe (at under under $80, we know they will), how do you plan to style them? With a white topper and ankle booties like the Celeb Style Council member or a red blouse and pumps like the actress?

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Fashion Faceoff: Jennifer vs. Julianne

HEIDI VS. ROSIE

Did Michael Kors make this dress just for supermodels? Because it looks like one must meet catwalk guidelines (tall frame, willowy limbs, great hair) to rock it. Heidi wears hers with a feather belt and black strappy sandals, while Rosie chooses a simpler waist-cincher and white pumps.

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Fashion Faceoff: Jennifer vs. Julianne

LILY VS. JULIANNE

This Halston Heritage maxi can be served up two ways: with a six-pack on the side (those would be Lily's abs) or with an orange twist, as seen on Julianne. It all depends on your palate.

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Fashion Faceoff: Jennifer vs. Julianne

CHRISTINA VS. MARIAH

First come the matching outfits – flirty pink Alaïa minis and major heels – then comes the album of duets and subsequent world tour. That's how it works, right? Yes? Please?

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Fashion Faceoff: Jennifer vs. Julianne

ROSIE VS. EMMA

After seeing the model wear her paisley-print Isabel Marant dress with heels, we're convinced it could be runway-ready. Upon seeing the actress wear it with high-tops, it looks like basketball attire. And considering how much the design costs (think: nearly four figures), you'd have to wear it in both those scenarios, plus many more, to make the cost-per-wear justifiable.

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Fashion Faceoff: Jennifer vs. Julianne

ALESSANDRA VS. SARAH JESSICA

Distressed: The word we'd use to describe the 7 for All Mankind jeans the model and the actress both have on. Also the word we'd use to describe how we feel about the socks-and-clog-sandals situation on SJP's feet.

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Fashion Faceoff: Jennifer vs. Julianne

NAOMIE VS. OLIVIA

The British actress unleashes the style power of this leather J Brand jacket with a printed dress and Jimmy Choo booties, while Olivia brings it back to its rock 'n' roll roots with a tee, skinny jeans and biker boots.

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Fashion Faceoff: Jennifer vs. Julianne

LADY GAGA VS. ELIZABETH

The singer looks like a resident of the Hunger Games's Capitol in this cutout Alexander McQueen number, thanks to full-length gloves, face paint and platform booties. Back on Earth, the actress adds regular old makeup and more traditional accessories.

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Fashion Faceoff: Jennifer vs. Julianne

JESSICA VS. KATE

How do you take your onesie? With a twist à la Jessica, who tops her J Brand jumpsuit with an aqua moto jacket? Or straight up as Kate does, with a black coat and classic pumps?

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Fashion Faceoff: Jennifer vs. Julianne

ANNE VS. ROSARIO

The finishing touches on the stars' Bottega Veneta midis aren't all that varied, which is why this Faceoff all comes down to fit. That, and how unzipped you prefer the "neck fly" on the dress.

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Fashion Faceoff: Jennifer vs. Julianne

VICTORIA VS. JAMIE

Now that we know how cute this chain-embellished Princess Vera Wang for Kohl's top looks with skinnies and a miniskirt, we're probably going to nab one for ourselves. And for 30 bucks, you should do the same right after you vote.

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Fashion Faceoff: Jennifer vs. Julianne

TIKA VS. NICOLE

Some things are black and white: like this striped Stella McCartney dress. Other things are not so black and white: like who looks chicer in the two-tone mini, the actress or the fashionista.

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Fashion Faceoff: Jennifer vs. Julianne

KARINA VS. DUCHESS CATHERINE

The list of things that a Dancing with the Stars competitor and Kate have in common isn't long. It includes: owns a printed purple Prabal Gurung dress. Period. End of list.

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Fashion Faceoff: Jennifer vs. Julianne

NINA VS. MALIN

The last time two stars went head-to-head in a bright red jumpsuit (Christina vs. Jennifer), there was a clear winner. But will there be such an obvious frontrunner in this battle of the Max Mara onesies?

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Fashion Faceoff: Jennifer vs. Julianne

LUCY VS. AMY

Once you recover from the décolletage-induced trance you're currently in, vote on whether this J. Mendel cutout dress looks better in the dark monochromatic look Lucy goes for, or white with black accessories as Amy selects.

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Fashion Faceoff: Jennifer vs. Julianne

BELLA VS. JADA

Colorful shoes. Loose waves. Similar poses. We wonder if Bella taped a photo of Jada to her mirror while getting ready. The main difference is that, although they each add bold kicks to their feminine Blumarine minis, the young star slips into mint pumps and the Hollywood veteran opts for red-and-pink cage sandals.

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Fashion Faceoff: Jennifer vs. Julianne

KAROLINA VS. ELIZABETH

Hot or iced coffee isn't the only thing these stars differ on. They wear their stripes uniquely too. The supermodel pairs her Splendid tee with floral skinnies, but the actress plays it a bit safer, balancing her shirt with a solid white skirt.

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Fashion Faceoff: Jennifer vs. Julianne

EMILY VS. HILARY

How do Emily and Hilary show off their cleavages? The same way: in a plunging A.L.C. top. How do they style the tank? Nearly the same way: with skinnies, pointy-toe heels and wavy down dos.

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Fashion Faceoff: Jennifer vs. Julianne

MILEY VS. RIHANNA

Frankly, we're a little surprised the Queen of Twerking and RiRi don't Faceoff more frequently. Here, they both kick it in gold lamé Chanel platform sneakers, and each bares some belly and a lotta leg while doing so (shocker).

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Fashion Faceoff: Jennifer vs. Julianne

VANESSA VS. KAROLINA

On the one hand, if you're going to wear an emerald sequin DVF gown with a hood, aren't you sort of obligated to wear the hood up? On the other hand, is it weird to wear a hood up at a red carpet event?

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Fashion Faceoff: Jennifer vs. Julianne

JESSICA VS. SELMA

Pants or no pants? That seems to be the debate here. The jean queen pairs her striped Wilt tank with – of course – jeans (a flared pair), while Selma skips bottoms altogether, sporting the top as a tunic.

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Fashion Faceoff: Jennifer vs. Julianne

CAT VS. ALI

To pull off this bathing-suit inspired Etro dress, it appears one requires the following a.) blonde hair, b.) a very toned body, and c.) serious style cojones. (And you probably want sunscreen if you're gonna wear it outside – those tan lines!)

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