Last Night's Look: Hit or Miss?

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JENNIFER LOPEZ

Tino Garcia/Startraks

heats up the Latin Grammy Awards in Las Vegas in a sparkling keyhole gown by Andrew Gn that hugs the megastar’s every curve and a Cecelia clutch.

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HEIDI KLUM

Jason Merritt/Getty

shows her support for Project Runway runner-up Mondo Guerra, donning a dotty custom gown for the Black Swan screening during Audi’s AFI Fest 2010 in Hollywood.

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KATY PERRY

Xposure

No vinyl here! The is Purr-fect in a sweet purple frock and Dolce & Gabbana heels during the London launch of her debut scent, Purr.

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SARAH JESSICA PARKER

Eventpress Herrmann/DPA/Abaca

The of the Bambi Awards shakes up Potsdam, Germany in a luminous, one-shoulder Halston Heritage dress, fierce strappy Nicholas Kirkwood platforms, Fred Leighton diamonds and a beaded clutch.

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EMMA WATSON

Jon Furniss/WireImage

continues to captivate London with her grown-up style, rocking a racy lace Rafael Lopez for Atelier Mayer minidress with a feathered skirt and Charlotte Olympia heels at the Harry Potter and the Deathly Hallows: Part 1 world premiere.

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NATALIE PORTMAN

Jordan Strauss/WireImage

The Black Swan tries a springtime look in a pink floral chiffon Rodarte confection, gold Dior sling-backs, Fred Leighton jewels and a ruby clutch at her movie’s Audi’s AFI Fest 2010 screening in Hollywood.

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EVA LONGORIA PARKER

Judy Eddy/WENN

rocks out in a long-sleeved beaded sparkler by Jenny Packham – check out that racy cut-out! – and metallic sandals before playing mistress of ceremonies at the Rock for the Cure benefit in Las Vegas.

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CAMILLA BELLE

Vegas5/StarlitePics/Abaca

The actress is a breath of fresh air in a floral Carolina Herrera fishtail gown and Cartier jewels at the Latin Grammy Awards in Las Vegas.

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JANUARY JONES

Dave M. Benett/Getty

The Versace fan leaves her Mad Men looks behind, opting for an ultra-sleek LBD with side cutouts and a high bouffant at a dinner with Donatella Versace in London.

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ASHLEY GREENE

Dario Cantatore/Getty

The of Mark cosmetics makes her mark in a ladylike tweed sheath at the brand’s beauty event in New York.

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KERRY WASHINGTON

John Lamparski/WireImage

The laid back actress shimmers in an elegant pink dress with a draped skirt at the Night Catches Us New York premiere.

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EMMA WATSON

Ian West/Press Association/Abaca

gives her pixie cut a red carpet spin, pairing a one-shoulder velvet Vionnet dress with crimson lips and edgy accessories at a promotional event for Harry Potter and the Deathly Hallows: Part 1 in London.

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KATY PERRY

Gilbert Carrasquillo/FilmMagic

Everything’s coming up roses for , who rocks a floral bustier by The Blonds, a tight pink mini and blue platforms before performing at the Victoria’s Secret Fashion Show taping in New York.

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GWYNETH PALTROW

Jon Kopaloff/FilmMagic

The Country Strong hits the CMA Awards in Nashville in an Atelier Versace gown with a side cutout – and one very high slit!

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CARRIE UNDERWOOD

Bill Davila/Startraks

Also at the CMA Awards, the was big-city stylish in a gray tulle gown – with lots of ruffles! – by Talbot Runhof and a Swarovski clutch.

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KIM KARDASHIAN

Johns PkI/Splash News Online

looks regal in a sleek updo and a black high-neck gown at a Perfumania event in New York celebrating her appearance on The Apprentice.

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LEIGHTON MEESTER

Michael Loccisano/WireImage

takes a detour from the Upper East Side to head down South for the CMA Awards in a trailing, draped Emilio Pucci gown with Cathy Waterman jewels and Jimmy Choo peep toe platforms.

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EVA MENDES

Fotonoticias/WireImage

The Other Guys has us green with envy in her baroque strapless dress and black platforms – both by Prada – at the movie’s photo call in Madrid.

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TAYLOR SWIFT

Curtis Hilbun/AFF-USA

The CMA Awards is red hot in a draped Monique Lhuillier gown with a sweetheart neck, Neil Lane jewels and Jimmy Choo sandals.

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TARAJI HENSON

Ben Rose/PictureGroup

Before co-hosting the 2010 Soul Train Awards in Atlanta, the actress flaunts an edgy LBD with a sculpted bodice on the red carpet.

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MALIN AKERMAN

Stephen Lovekin/Getty

The actress keeps it chic in a one-shoulder ASOS LBD and black pumps on the pink carpet at the Victoria’s Secret Fashion Show taping in New York.

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HALLE BERRY

Todd Williamson/WireImage

Va-va-vroom! The showcases her enviable shape in a black Elie Saab dress with embellished skirt at an Audi-hosted AFI Film Festival event in Hollywood.

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KIM KARDASHIAN

Michael N. Todaro/FilmMagic

The celebrates being single in a geometric sequined mini and Casadei triple platform pumps at the Kardashian MasterCard launch in N.Y.C.

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VICTORIA BECKHAM

Pacific Coast News

The shaded lightens up, opting for a yellow frock, satin cap-toe pumps and slicked-back tresses while in the U.K.

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TAYLOR SWIFT

Andrew H. Walker/Getty

The abandons girly frocks in favor of a sparkling halter ZSpoke by Zac Posen dress and Neil Lane jewels at the BMI Country Awards in Nashville, Tenn.

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AUDRINA PATRIDGE

Vince Flores/AFF

The keeps it simple in a strapless gunmetal dress and patent pumps at the People’s Choice Awards announcements in Los Angeles.

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FAITH HILL

Andrew H. Walker/Getty

The trades her modern mini for a sweeping brown and taupe gown with drop earrings and a cuff bracelet at the BMI Country Awards.

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KERRY WASHINGTON

Johns PkI/Splash News Online

Is she a fashion “do”? The actress accents her tiered floral Dior minidress with bright pink lips and a quilted blue bag at the New York Moves Power Women event in N.Y.C.

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MILEY CYRUS

Nick Sadler/Startraks

tucks her cream blouse into a high-waisted mini to celebrate her new clothing range, Miley and Max for George, at an Asda supermarket in the U.K.

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ELIZABETH BANKS

Dario Cantatore/Getty

Banks shows off her trim midsection in a fringed cut-out Versace LBD, Stephen Russell jewels and strappy sandals at the N.Y.C. premiere of The Next Three Days.

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SELENA GOMEZ

Toby Canham/Getty

keeps it casual in a lacy floral top and side-zip denim on the L.A. set of Extra.

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GWYNETH PALTROW

Norman Scott/Startraks

The aspiring country star brings Hollywood glamour to the Nashville premiere of Country Strong, where she spotlights newly toned physique in a chic black Chado Ralph Rucci dress with sheer, peekaboo trim and matching Lanvin shows.

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KATE HUDSON

HRC/WENN

plays a modern siren in her shirred gown with a thigh-high slit, which she accents with Cartier jewels, golden Brian Atwood pumps and sexy waves at Glamour magazine’s Women of the Year Awards in N.Y.C.

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LEIGHTON MEESTER

Jon Kopaloff/FilmMagic

in Tennessee? The Upper East Side darling makes a statement in a crocheted black and magenta Marc Jacobs gown with golden underpinnings and Cathy Waterman gems at the Nashville premiere of Country Strong, in which she has a supporting role.

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FERGIE

Charles Eshelman/FilmMagic

cuts a sexy silhouette in a one-shoulder scarlet gown by Zac Posen with a daring slit, oodles of Cartier diamonds and fire-engine red Casadei pumps at the Glamour Women of the Year Awards in N.Y.C.

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FAITH HILL

Jon Kopaloff/FilmMagic

You’ve got to have ! The singer shows stylish support for hubby at the Country Strong premiere in a modern black-and-white mini with origami pleating, Solange Azagury-Partridge jewelry and basic black pumps.

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SCARLETT JOHANSSON

Michael Simon/Startraks

gives her new bob some extra bounce while appearing on Late Night with Jimmy Fallon in a belted 3.1 Phillip Lim LBD with jewel-encrusted neckline, patent belt and opaque tights.

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LEA MICHELE

Jason LaVeris/FilmMagic

The Glee star keeps it flirty in a watercolor cocktail dress, Caleo jewels and patent pumps at TV Guide’s 2010 Hot List party at the W Hollywood Hotel.

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LAUREN CONRAD

Mike Coppola/FilmMagic

Debuting a darker do in N.Y.C., glams it up for a VH1 Save the Music Foundation gala at Cipriani Wall Street in a dusty blue chiffon gown, House of Lavande cuff and ruby lips.

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JAYMA MAYS

Stewart Cook/Rex USA

The Glee cutie plays with contrast, pairing a chambray button up with a glittering gold sequined Nanette Lepore skirt and silver sandals at the TV Guide Hot List party in Hollywood.

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KELLY RIPA

Demis Maryannakis/Splash News Online

makes the most of basic black, pairing her belted A-line LBD with sky-high satin pumps outside the Late Show with David Letterman.

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RIHANNA

Venturelli/WireImage

Before rocking out with Bon Jovi at the MTV Europe Music Awards in Madrid, made her entrance in a show-stopping tulle Marchesa mermaid gown.

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EVA LONGORIA PARKER

Kevin Mazur/WireImage

The MTV Europe Music Awards raises the style bar – and her hemline! – in silky chocolate Emilio Pucci dress with trailing train.

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MILEY CYRUS

PA Photos/Landov

Also at the MTV Europe Music Awards, donned a floor-length D&G halter-neck dress adorned with ruffled tiers and a black bow.

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RACHEL MCADAMS

Janet Mayer/Splash News Online

brings high shine to the New York Morning Glory premiere in a strapless gunmetal Lanvin dress and studded mesh heels.

Continued on next slide.

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ZOE SALDANA

Frederick M. Brown/Getty

The Calvin Klein underwear model covers up her curves in a chic LBD, printed clutch and Mary Jane heels for the Abel screening at Audi’s AFI Fest 2010 in Hollywood.

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SHAKIRA

The shakes it in a plunging black-and-gold sequined Pamella Roland dress before taking the stage at the MTV Europe Music Awards in Madrid.

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Last Night's Look: Hit or Miss?

1 of 53

JENNIFER LOPEZ

2 of 53

HEIDI KLUM

3 of 53

KATY PERRY

4 of 53

SARAH JESSICA PARKER

5 of 53

EMMA WATSON

6 of 53

NATALIE PORTMAN

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EVA LONGORIA PARKER

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CAMILLA BELLE

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JANUARY JONES

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ASHLEY GREENE

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KERRY WASHINGTON

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EMMA WATSON

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KATY PERRY

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GWYNETH PALTROW

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CARRIE UNDERWOOD

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KIM KARDASHIAN

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LEIGHTON MEESTER

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EVA MENDES

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TAYLOR SWIFT

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TARAJI HENSON

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MALIN AKERMAN

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HALLE BERRY

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KIM KARDASHIAN

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VICTORIA BECKHAM

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TAYLOR SWIFT

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AUDRINA PATRIDGE

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FAITH HILL

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KERRY WASHINGTON

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MILEY CYRUS

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ELIZABETH BANKS

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SELENA GOMEZ

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GWYNETH PALTROW

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KATE HUDSON

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LEIGHTON MEESTER

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FERGIE

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FAITH HILL

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SCARLETT JOHANSSON

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LEA MICHELE

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