Last Night's Look: Hit or Miss?

Vote on this week's styles including Eva Longoria Parker, Cameron Diaz and more stars! You decide – are they fashionistas or flops?

01 of 49

CAMERON DIAZ

CAMERON DIAZ
Flynet

pushes up her sleeves and gets stylish at the Knight and Day premiere in London in a micro-sequin Stella McCartney minidress, Herndon Heald ring and black Casadei pumps.

02 of 49

EVA LONGORIA PARKER

EVA LONGORIA PARKER
Gregg DeGuire/PictureGroup

channels old-Hollywood glamour at the Neil Lane bridal collection for Kay Jewelers debut wearing a ruched black Gustavo Cadile dress and peep-toe platforms accented with jewels from the line.

03 of 49

ANGELINA JOLIE

SAN DIEGO
Kevin Winter/Getty

Salt’s adds a little flavor to Comic-Con while promoting the action movie in a second-skin leather jacket and pencil skirt – both by Versace.

04 of 49

ASHLEE SIMPSON-WENTZ

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Gregg DeGuire/PictureGroup

Draped in a black silk gown accented with long waves, poses at the Hollywood debut of the Neil Lane bridal collection for Kay Jewelers in earrings and bangles from the line.

05 of 49

SELENA GOMEZ

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Bill Davila/Startraks

The stays neutral while she visits Good Day New York in silky tan short shorts topped with a buttery top and white blazer.

06 of 49

JANUARY JONES

JANUARY JONES
Jayme Oak/Startraks

Mad Men’s prim leading lady mixes up her style off-set, rocking super-skinny jeans, a lace top and pointy pumps in N.Y.C.

07 of 49

NICOLE RICHIE

NICOLE RICHIE
JCalderon/Splash News Online

After partying it up with , leaves an L.A. nightclub wearing a jacket woven with silver paillettes, exotic clutch and ripped skinny jeans.

08 of 49

KATE WALSH

KATE WALSH
Gregg DeGuire/PictureGroup

Bringing her own kind of dazzle to the debut of the Neil Lane bridal collection for Kay Jewelers, pairs a shimmering, banded top with a black bubble skirt and jewels from the line.

09 of 49

MISCHA BARTON

MISCHA BARTON
Richard Young/Startraks

rocks an edgy mix of ruffle-trimmed tank, nude skirt and high-drama makeup for the Marc Jacobs Bang fragrance launch party in London.

10 of 49

CAMERON DIAZ

CAMERON DIAZ
Vivi Boehringer/face to face/iPhoto

The turns heads at the Knight & Day premiere in Munich in an asymmetric white Bottega Veneta dress, Jennifer Meyer bracelets, Joan Hornig ring and nude heels.

11 of 49

JENNIFER ANISTON

JENNIFER ANISTON
Rotello/MCP/Startraks

After launching her new scent earlier in the day, hits the town in London wearing a black illusion dress topped with a classic trench, strappy sandals and exotic clutch.

12 of 49

SELENA GOMEZ

SELENA GOMEZ
Albert Michael/Startraks

Hollywood’s newest designer shows off own style backstage at Late Night with Jimmy Fallon in a purple strapless Christian Cota dress and silver heels.

13 of 49

JADA PINKETT SMITH

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G Tres/Splash News Online

Putting the ‘hot’ in pink, the Hollywood mom supports her child-star son Jaden at the Karate Kid premiere in Madrid in a vivid minidress and strappy sandals.

14 of 49

ALI LARTER

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Splash News Online

Keeping her baby bump hidden, the goes shopping in a floral print sundress and T-strap sandals.

15 of 49

KATE BOSWORTH

KATE BOSWORTH
Stefanie Keenan/WireImage

The catches scarlet fever, draped head-to-toe in red, including Jonathan Kelsey heels, at the Vanessa Bruno dinner in L.A.

16 of 49

RIHANNA

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Christopher Polk/Getty

The singer brings the party with her, rocking a kaleidoscopic ruffled D&G jumpsuit at the Asics and Drai’s Hollywood party in L.A.

17 of 49

RACHEL BILSON

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Stefanie Keenan/WireImage

Leaving her shades at home poses at the Vanessa Bruno dinner in L.A. in a blazer-topped striped shirt, red miniskirt and platform sandals.

18 of 49

TORI SPELLING

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Vallery Jean/FilmMagic

While signing copies of Uncharted TerriTORI in Miami Beach, Fla. the proves she’s never lost when it comes to signature style, rocking a canary top, skinny jeans and platform pumps.

19 of 49

JENNIFER ANISTON

JENNIFER ANISTON
INF

Hollywood’s newest debuts her scent in style in a ruched Valentino minidress and nude sandals at London department store Harrods.

20 of 49

VANESSA HUDGENS

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Sara De Boer/Startraks

off-screen turns up the heat in a pearl-trimmed Reem Acra satin minidress, metallic Ferragamo purse and silver Jimmy Choo sandals at the L.A. premiere of his new movie, Charlie St. Cloud.

21 of 49

SELENA GOMEZ

SELENA GOMEZ
Henry Lamb/Photowire/BEImages

The young looks more pin-up than Disney in a printed corset top and high-waisted skirt, topped with red-hot lips and Christian Louboutin pumps outside The Late Show with David Letterman.

22 of 49

CHRISTINA HENDRICKS

CHRISTINA HENDRICKS
Michael Tran/FilmMagic

The Mad Men star gets the show’s fourth season off to a sexy start in a black lace dress by Dolce & Gabbana and scalloped heels for the show’s screening in Hollywood.

23 of 49

KATE BOSWORTH

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Donato Sardella/WireImage

Keeping it cool, the stylish adds a graphic T-shirt and leopard-print purse to her black skinny jeans for the Mulberry pool party in Los Angeles.

24 of 49

MICHELLE TRACHTENBERG

MICHELLE TRACHTENBERG
Marion Curtis/Startraks

Even Gossip Girls like a discount! The Upper East Side villain dons a flirty floral Bop Basics dress and studded sandals for the opening of New York City’s first Target store in Harlem.

25 of 49

SHENAE GRIMES

SHENAE GRIMES
Donato Sardella/WireImage

Looking every bit the 90210 star, Shenae dons a peachy satin-topped dress and tough black booties for the Mulberry pool party in Los Angeles.

26 of 49

MOLLY SIMS

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Donato Sardella/WireImage

The jewelry designer tops off her printed satin dress with a matching gemstone statement necklace and gold pumps for the Mulberry pool party in L.A.

27 of 49

ELISABETH MOSS

ELISABETH MOSS
Michael Tran/FilmMagic

The Mad Men actress channels old Hollywood glamour in a ruffled emerald taffeta Oscar de la Renta dress, patent pumps and Kara Ackerman jewels at the show’s fourth season screening in Los Angeles.

28 of 49

ELIZABETH BANKS

ELIZABETH BANKS
Jason Kempin/Getty

The actress beats the Manhattan heat in a pretty printed black-and-white dress, messy updo and neutral accessories at the opening of the city’s first Target store.

29 of 49

ANGELINA JOLIE

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Kyle Rover/Startraks

All eyes are on , in a sparkling black beaded Emporio Armani cocktail dress, an Asprey bracelet and nude Ferragamo peep-toe pumps, at the world premiere of Salt in Hollywood.

30 of 49

KATIE HOLMES

KATIE HOLMES
Jemal Countess/Getty

tops a black-and-red striped Celine dress and buckle-topped Roger Vivier shoes with sweet ringlet curls for the N.Y.C. premiere of The Extra Man.

31 of 49

MEGAN FOX

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Frank Micelotta/Getty

It’s back to work for the newlywed who glows in a patterned Azzedine Alaia frock, Brian Atwood pumps and Neil Lane jewels at the VH1 Do Something Awards.

32 of 49

NAOMI WATTS

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Axelle Woussen/Bauer-Griffin

Showing off her new stick-straight cut, gets glam in a glittering Gucci minidress, Neil Lane jewelry and matching pewter sandals for the Hollywood premiere of Salt.

33 of 49

RIHANNA

RIHANNA
Hellmuth Dominguez/Pacific Coast News

The struts her stuff in an one-arm, black Lanvin dress and pointy nude pumps while leaving Ago restaurant in Hollywood.

34 of 49

KRISTIN CAVALLARI

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INF

Goodbye reality TV, hello Hollywood! The Hills stuns in a plunging silver dress by The Blonds – complete with tough spiked shoulders and matching sandals – for the A-list world premiere of Salt.

35 of 49

DEMI LOVATO

DEMI LOVATO
Frank Micelotta/Getty

Taking a cue from her style icon , works her own curves in a colorblock Hervé Léger bandage dress, Everlon knot jewels and metallic pumps for the VH1 Do Something Awards.

36 of 49

JADA PINKETT SMITH

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Semmer/iPhoto

Continuing to play the proud mama, Jada shines in a metallic minidress and gold accessories, including Amrapali earrings, at the Berlin premiere of son Jaden’s flick The Karate Kid.

37 of 49

KRISTEN BELL

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Kevin Mazur/WireImage

The stylish proves to be the ultimate golden girl in a Swarovski crystal-adorned, lace Georges Chakra Couture dress and matching metallic sandals for the VH1 Do Something Awards.

38 of 49

AMERICA FERRERA

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Jason LaVeris/FilmMagic

The keeps it classic in a curve-hugging black shift dress accessorized with patent peep-toes and hoop earrings for the Los Angeles screening of The Dry Land.

39 of 49

VANESSA HUDGENS

VANESSA HUDGENS
Albert Michael/Startraks

Hitting the beach in style, dons a metallic chevron dress by Missoni, Alisa Michelle and Tiger Lily layered necklaces and blush pink Jimmy Choo sandals for the Neutrogena Wave for Change kick-off event in Malibu, Calif.

40 of 49

KIM KARDASHIAN

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John Parra/WireImage

She may be on hand to show off her swimwear for Beach Bunny, but flaunts her famous curves in a lingerie-inspired dress and black patent pumps during Miami Fashion Week.

41 of 49

SELENA GOMEZ

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Storms Media Group

The designer is pretty in a hot pink Anlo dress and metallic gold accessories at Miami’s Fashion Week Swim where she took in the Beach Bunny runway show with the Kardashians.

42 of 49

HAYDEN PANETTIERE

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Albert Michael/Startraks

makes a splash in a clingy teal dress, Cheryl Lynn jewels and pink platform sandals at the Neutrogena Wave for Change kick-off event in Malibu, Calif.

43 of 49

GWEN STEFANI

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Splash News Online

It’s a stylish day out for , who rocks a cropped tank, loose navy pants, a big black bag and platform sandals for lunch with her family (not pictured) in Los Angeles.

44 of 49

EVA LONGORIA PARKER

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Amy Graves/WireImage

adds a pop of pink to her ruffled little black Robert Rodriguez strapless dress with suede peep-toe Sergio Rossi slingbacks for the Playing for Hope Gala in Los Angeles.

45 of 49

DEMI LOVATO

DEMI LOVATO
Noel Vasquez/Getty

From her fringed vest and jeweled necklace to her Rock & Republic bandage skirt and tough sandals, looks every bit the rock star at the “Shop ‘Til You Rock” event in Glendale, Calif.

46 of 49

KOURTNEY KARDASHIAN

KOURTNEY KARDASHIAN
INFd

Joining her sisters – and ! – the oldest Kardashian gets sexy in a one-arm clingy satin dress to watch her designs hit the catwalk at the Beach Bunny Swimwear runway show during Miami Fashion Week.

47 of 49

JENNIFER LOVE HEWITT

JENNIFER LOVE HEWITT
MJT/AdMedia

The star manages to keep it sweet in Sin City in a ruffled-trimmed pink dress and matching sandals while promoting her new movie The Client List.

48 of 49

KENDRA WILKINSON

KENDRA WILKINSON
Gustavo Caballero/Getty

The new brings her book to Miami in a colorful printed tube dress by Hale Bob and simple gold jewels.

49 of 49

REBECCA ROMIJN

REBECCA ROMIJN
Fame

The sexy gets charitable in style in a curve-hugging, black-and-white Hervé Léger dress, House of Lavande jewelry and satin bow-topped pumps at The Life Ball to benefit HIV & AIDS in Vienna, Austria.

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