The supermodel's costume was truly out of this world – she dressed up as a two-tone alien, complete with red-and-purple plastic armor and matching hair and skin!
No one would ever call the Project Runway judge a birdbrain, except possibly when she flew into her annual party in a mini-skirt, fishnet-stockings and full-on black feathers.
When Klum decided to channel the Indian goddess, she went all out donning turquoise skin, lots of arms and a thick chain of skulls around her neck.
Meow! Her supermodel figure was on full display when she wore this skin-tight cat costume at her annual event.
The fruits of a slithering Klum's labor (she was 8 months pregnant!) that year included a getup featuring the apple from the Garden of Eden and platform snakeskin boots.
The mom-of-four went for a more sexy interpretation sporting thigh-high boots, fangs and a big black Cher-like wig for her party.
RED WITCH: 2004
Donning a short red dress and long red wig with bones sticking out of her costume created a wholly original, somewhat eclectic, look but, as always, Klum pulled it off with fabulous style.
GOLD ALIEN: 2003
A fully-gilded Klum becomes the first extraterrestrial to earn the title "Sexiest Space Creature Alive."
BETTY BOOP: 2002
Trading in her long blonde locks for a short dark 'do, the supermodel rocked a tight red dress as the cartoon sex symbol.
LADY GODIVA: 2001
Klum set the bar high dressing as a bloody, but clothed version of the legendary noblewoman for her first annual Halloween celebration – and she's been wowing Hollywood with her Halloween largess since.
After winning the Emmys red carpet in her custom Zac Posen gown, you'd think Heidi would take a night off. But no, the star turns heads once again in a silky leopard maxi – that looks like it could double as a formal nightgown – at an America's Got Talent viewing party in N.Y.C.
As you know in fashion – and Project Runway – one day you're in and the next day, you're out. Unless you are Klum, then you're always in style.
HEIDI KLUM: 2005, 2006 & 2009
Heidi never let a little thing like pregnancy get between her and a red carpet. At the 2005 awards she showed off her post-baby body in a draped floral dress just eight days after giving birth to son Henry. A year later, she arrived rocking a gorgeous scarlet gown and a major bump. But nothing beats 2009, when she donned a skintight black strapless gown, which enhanced her any-minute-now belly.