Celeb Fashion Hit or Miss

Vote on this week's styles from Mary-Kate Olsen, Rihanna, Blake Lively and more stars! You decide – are they fashionistas or flops? By Melissa Liebling-Goldberg

01 of 33

MARY-KATE OLSEN

MARY-KATE OLSEN
INF

In classic Olsen style, the mini-mogul adds sky-high wedge booties and quirky glasses to her black cupcake coat and miniskirt for the Giambattista Valli fashion show in Paris.

02 of 33

RIHANNA

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Eric Ryan/Getty

The Grammy winner arrives at the Chanel runway show in Paris sporting an oversized patterned sweater and funky neon blue t-strap pumps from the design house’s Paris/London Collection.

03 of 33

BLAKE LIVELY

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Andrew H. Walker/Getty

Looking every bit an Upper-East-sider, the Gossip Girl keeps it preppy in a patent belted Dolce & Gabbana mini-dress and tan pumps for the private screening of Elvis & Anabelle in New York City.

04 of 33

COURTENEY COX

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Vince Flores/Celebrity Photo

The Dirt star goes casual in a rose-colored Balenciaga top and wide-leg J Brand jeans for the premiere of the show’s second season.

05 of 33

KATE BECKINSALE

KATE BECKINSALE
AXELLE/BAUER-GRIFFIN

The actress looks simply divine at the Snow Angels premiere, glittering on the red carpet in a white column Alberta Ferretti gown.

06 of 33

KATE WALSH

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Carlos Costas/Pacific Coast News

The Private Practice star is the picture of spring in a Jay Godfrey sundress and nude pumps while out and about in Australia.

07 of 33

RACHEL BILSON

RACHEL BILSON
FRE/Fame Pictures

After showing off new bangs in Tokyo, the actress returns to L.A. looking fresh-faced and cozy in leggings and layered sweaters paired with a bright blue bag.

08 of 33

VICTORIA BECKHAM

VICTORIA BECKHAM
George Pimentel/WireImage

Leaving the Cavalli costumes behind, the Spice Girl is all business in a Diane von Furstenberg blazer, blue jeans and platform boots while unveiling her dVb Collection in Toronto.

09 of 33

NATALIE PORTMAN

NATALIE PORTMAN
Dave Allocca/Startraks

Another night, another dress! The Other Boleyn Girl star keeps it simple in a sweet Balenciaga black number, fringed Te Cesan heels from her line and a Chanel purse for a private dinner in N.Y.C. in honor of her new movie.

10 of 33

CHRISTINA RICCI

CHRISTINA RICCI
Theo Wargo/WireImage

The Penelope star dresses up her dark AG jeans and white J. Crew tank with an ivory Stella McCartney vest, metallic gold Giuseppe Zanotti heels and Van Cleef & Arpels jewels for an appearance on TRL.

11 of 33

ASHANTI

ASHANTI
Bryan Bedder/Getty

The singer goes for retro glam in her belted keyhole pencil dress, T-strap platforms and a curly bob during a visit to BET’s 106 & Park.

12 of 33

ALI LARTER

ALI LARTER
INF

Striking a pose from the front row, the actress looks perfectly chic in a buttoned-up black dress at the Ungaro fashion show in Paris.

13 of 33

NATALIE PORTMAN

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Stephen Lovekin/Getty

The actress attends an Alberta Ferretti-sponsored private screening of The Other Boleyn Girl in a low-cut purple velvet dress by the designer.

14 of 33

MILEY CYRUS

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Chris Polk/WireImage

After donning a red Valentino gown for her first Oscars, the young star slips back into colored H&M jeans and an Urban Outfitters T-shirt backstage at a taping of Randy Jackson’s America’s Best Dance Crew.

15 of 33

RACHEL BILSON

RACHEL BILSON
Junko Kimura/Getty

Showing off her new bangs, the always-fashionable actress dons a strapless ombre Zac Posen dress and Christian Louboutin heels for the Tokyo premiere of her new movie Jumper.

16 of 33

ASHLEE SIMPSON

ASHLEE SIMPSON
Marion Curtis/Startraks

Maintaining her rocker cool, the singer performs at her New York album release party in a cropped Gary Graham leather jacket, tight black T-shirt, skinny striped J Brand jeans and pin-straight hair.

17 of 33

DITA VON TEESE

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Splash News Online

The burlesque model mixes sexy and sweet in a purple bow-tied party frock by Elie Saab and leopard-print heels to celebrate the opening of the Just Cavalli boutique in Paris.

18 of 33

COURTENEY COX

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Dara Kushner/INF

The Dirt star manages to stay dry in the rain in a belted black trench – but keeps things glam in strappy heels for her appearance on the Late Show with David Letterman.

19 of 33

ASHLEE SIMPSON

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Peter Kramer/AP

The singer hits TRL to promote her new single in an ’80s-inspired black and white mix of J Brand jeans and Anne Demeulemeester vest with neon orange Marc by Marc Jacobs heels.

20 of 33

EVA LONGORIA

EVA LONGORIA
Kevin Mazur/WireImage

The Desperate Housewife is perfectly pink in her embroidered strapless Marchesa dress, H. Stern jewels, Sergio Rossi heels and Nancy Gonzalez clutch as she makes her way into Prince’s Oscars afterparty.

21 of 33

CATE BLANCHETT

CATE BLANCHETT
Michael Buckner/Getty

The day after making a splash at the Oscars, the actress is golden at a SK-II luncheon in L.A.

22 of 33

LUCY LIU

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LYDIE/SIPA

The Cashmere Mafia star is summer-ready in her crisp white suit at the Christian Dior show in Paris.

23 of 33

JESSICA SIMPSON

JESSICA SIMPSON
Stefan/INF

The budding country singer gets into the spirit with her plaid blazer, faded blue jeans and oversized yellow Miu Miu purse as she leaves dinner in L.A.

24 of 33

HEIDI KLUM

HEIDI KLUM
Jeffrey Mayer/Wireimage

Leaving her bold red gown behind, the Project Runway host sizzles in a Roberto Cavalli silver sequined minidress at Elton John’s afterparty.

25 of 33

ASHLEY OLSEN

ASHLEY OLSEN
Ramey

The mini-mogul hits the streets of L.A. in skinny black jeans, a long T-shirt and luxe bag.

26 of 33

SIENNA MILLER

SIENNA MILLER
Jim Ruymen/UPI/Landov

The British actress celebrates her nomination at the Film Independent’s Spirit Awards in a Monique Lhuillier lace dress and a Rodo clutch.

27 of 33

ASHLEE SIMPSON

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Joe Commber/Sipa

The singer sticks to all-black for the release party for her new single “Outta My Head” in Las Vegas.

28 of 33

MARION COTILLARD

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Julien Hekimian/WireImage

The Best Actress winner at the Oscars takes the same honor at the Cesar Film Awards in France in a pink Gaultier Paris dress.

29 of 33

KERRY WASHINGTON

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Jordan Strauss/WireImage

The actress gets bold in an Oscar de la Renta yellow turtleneck and colorful skirt for the Spirit Awards in Santa Monica.

30 of 33

KATE BECKINSALE

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Jeffrey Mayer/WireImage

The L.A. Confidential cover girl is feted in a black Michael Kors shift in – where else? – Los Angeles.

31 of 33

JULIANNE MOORE

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Jordan Strauss/WireImage

The host of the Diamond Information Center Gala Dinner tells PEOPLE of her 667 dress, “I wanted to wear something that was new and different and had kind of a fresh point of view.”

32 of 33

JADA PINKETT SMITH

JADA PINKETT SMITH'S LEOPARD HEELS
Steve Granitz/WireImage

The actress is chic in an ivory Oscar de la Renta sheath at the Spirit Awards.

33 of 33

SHARON STONE

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Jason Merritt/FilmMagic

The actress explains her Dior zebra-print pajamas at the Diamond Information Center dinner, telling PEOPLE: “They said diamonds, so I didn’t have to worry about clothes!”

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