5 Best-Dressed Celebs of the Week

1. Gwyneth Paltrow in Atelier Versace

Gwyneth Paltrow has become a major player on the red carpet: her stunning looks and athletic figure show off fashion's latest creations to perfection. Gwyneth is known for her stylish casual-wear, but here she amps up the va-va-voom with a one-shouldered Atelier Versace gown. The gentle fading at the bottom of the gown – from ice blue to dusky pink – is a beautiful touch, and it complements Gwyneth perfectly.

Gwyneth Paltrow (left), Leighton Meester (right)

2. Leighton Meester in Pucci

Leighton Meester is always willing to take a risk on the red carpet, and her animal print Pucci gown does just that. She completes her stylish look with a pair of incredibly high and incredibly chic Jimmy Choo platforms.

3. Carey Mulligan in Preen

Carey Mulligan often makes the best-dressed lists: the actress has the innate ability to pull off an unusual look and make it sophisticated, stylish, and classic. Here, she pairs a Spring 2011 Preen dress with electric blue YSL heels.

4. Emma Watson in Vionnet

With a chic new pixie cut Emma Watson sparkles on the red carpet in her one-shouldered Vionnet dress. Out to promote the new Harry Potter film, her dark lips and eyes perfectly complement the soft drapes of her velvet dress, and lend an edgier sophistication to the young starlet.

Carey Mulligan (left), Emma Watson (center), Mary Kate & Ashley Olsen (right)

5. Mary Kate and Ashley Olsen

Mary Kate and Ashley Olsen have been style icons for a long time, and for good reason. Always the epitome of understated chic (a la Kate Moss), the twins rock fur and textured black tights at WWD's 100th anniversary celebration.

Images courtesy of American Broadcasting Companies, Wire Images, Zimbio, and Getty