I don't know how I'll go back to wearing jeans!" says Renée Zellweger. After seeing the creations she wears in the comedy Down With Love, who could blame her? Taking his cues from films like the Doris Day-Rock Hudson classic Pillow Talk, costume designer Daniel Orlandi whipped up 37 candy-colored suits, sheaths and gowns in period fabrics for Zellweger, who plays a provocative author opposite Ewan McGregor as a lady-killer journalist. "My character embraces her femininity," she says, "so skirts that fit just so really helped." Less appealing were the fake lashes (she's allergic) and spiky heels, which she admits gave her a new respect for "career gals" who dressed to the nines. "I don't know how they did it every day." Sounds like she'll be keeping those jeans after all.

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Day Vs. Renée
Shortly after starting Down With Love, Renée Zellweger was sporting a retro feminine look reminiscent of perky '60s star Doris Day. Coincidence? The evidence suggests otherwise.

The Trophy 1960: Popular fave Day won a Golden Globe. 2003: Zellweger scored her Globe for Chicago.

The Tailored Suit 1960: Trim in Midnight Lace. 2003: Poised at an awards show.

The Little Black Dress 1959: Pillow Talk's sheath. 2003: In a Lily et Cie frock.

The Pearl Necklace 1960: A sunny, pearl-draped blonde. 2003: A short bob shows off her triple strand.

The Full Skirt 1961: Casually elegant while leaving her footprints in L.A. 2003: Looking super-femme at the Chicago premiere in Rome.