Last Night's Look: Hit or Miss?

lets her hair down at the Love & Other Drugs Hollywood premiere, leaving no room for error in a body-hugging Antonio Berardi dress, Neil Lane jewels and nude peep toe Sergio Rossi platforms.

The Gossip Girl puts together a black sequin skirt with an oversized chambray shirt, pulling it together with a tan grommet belt and black booties at the Realm Boutique opening in N.YC.

steps into The World of Gloria Vanderbilt in a ladylike ensemble at the book’s launch party held at the Ralph Lauren Women’s Boutique on Madison Avenue.

The also attended the BAFTA Britannia Awards, sweeping the red carpet in an ivory Valentino Haute Couture empire-waisted ivory gown with back bow detailing.

First, a futuristic robot, now an undercover agent! The Ann Taylor spokesmodel tops off her monochromatic look with a black fedora at the brand’s holiday dinner at West Hollywood’s Palihouse.

gets lucky at the 7th Annual Lucky Shops VIP Night in New York, pumping up her hot one-shouldered LBD with a chain necklace, beaded clutch and sweet pink pumps.

The holidays starts early for , who turns on the Christmas lights at London’s Westfield Shopping Center in a heather bustier, red pencil skirt and a festive bow headband.

It’s another charming look for the British beauty, who steals the spotlight in a Preen dress with a beaded bodice and a belted tea-length skirt – and unexpected blue suede heels! – at the BAFTA Britannia Awards in Los Angeles.

Also at the BAFTA Britannia Awards: the French actress, who shines in a blue one-sleeved Elie Saab dress, strappy black Jimmy Choo sandals and a flirty coral lip.

It’s all about downtown chic for the of Vera Wang’s new fragrance, hosting the Vogue and Derek Lam Spring 2011 event in an olive tiered dress from the designer, fierce leopard heels and dangly earrings in New York.

The House star trades her scrubs for a sultry evening look, pairing a cashmere bodysuit with a fishtail sequin skirt – both by Michael Kors – with a Judith Leiber clutch and Kara Ackerman Designs bangle at the BAFTA Los Angeles 2010 Britannia Awards at the Hyatt Regency Century Plaza.

The burgeoning songstress shows off her famous curves in a body-conscious sequined LBD by Alice + Olivia, a modern clutch and classic peep-toes at the opening of the N.Y.C. location of DASH.

Has she been raiding Blake Lively’s closet? The makes a style statement at the 5th Annual Fashion Delivers Gala in N.Y.C. in a beaded Roberto Cavalli tunic and crystal embroidered boots.

The actress looks sophisticated in a winter white blouse, pencil skirt and lucite platforms (a celeb fave!) – all by Calvin Klein Collection – at the brand’s event with W magazine to celebrate Elyssa Dimant’s Minimalism and Fashion book launch in N.Y.C.

The reality star joins sister at the DASH boutique, braving the elements in a wintery ensemble of a swingy A-line skirt, cropped jacket, black matte tights, leopard print footwear and dramatic drop earrings.

Still having a ball in Rome, the classic beauty hits up the Bulgari Express for Save the Children Party in a sleek black Alexander McQueen dress with a lace overlay cutout and strappy sandals.

once again makes streetwear an effortless affair, stepping out for lunch in Los Feliz, C.A., in a scoopneck tee, jeggings and ankle booties.

Nothing like a hot LBD to make you red carpet ready! The actress wears a curve-hugging sheath with black peep toe pumps to the 127 Hours premiere in Beverly Hills.

Also at the 127 Hours L.A. premiere: the 90210 star, looking studious and casually chic in an Astars tunic – with some funky beaded peep toe booties!

It’s as simple as black-and-red for the leggy blonde, who revs up the 5th Annual Fashion Delivers Gala in a long sleeve red-hot shift by Marchesa at New York’s Waldorf Astoria hotel.

The glams up her pixie cut with a sparkling black sequined LBD with bow adornment, a Zambos & Siega clutch and crimson dangly earrings at the launch of Decades Denim in Beverly Hills.

The steps out for a night on the town in N.Y.C. with beau and his parents (not pictured) in a leg-baring, off-white dress, full length black coat and laced-up heels.

The actress supports fellow thespian at the N.Y.C. premiere of his new flick 127 Hours in a downtown casual toffee leather jacket, graphic tee, black skinny jeans and taupe sandals – all by Gucci.

The redhead continues her style streak in Rome, hitting the red carpet for The Kids are All Right in a one-shoulder, navy Giorgio Armani gown.

Also at the Decades Denim event, Bell mixes jewel tones, paring an amethyst Etro blouse with an emerald clutch, gold rope-tie necklace and go-with-everything charcoal skinnies from the new line.

Gossip Girl’s resident bohemian shirks the colorful ensembles in favor of a black silk Juicy Couture by Erin Fetherston catsuit, a diamond “J “pendant designed by Martin Katz for Juicy Couture, velvet obie belt and leopard print mules at the WWD 100th anniversary party in N.Y.C.

The actress keeps it daytime appropriate in a belted white and blue graphic frock, Kate Spade tote and metallic lace up sandals while lunching with a male friend in Beverly Hills.

The supermodel knows that a draped black dress never goes out of style, expertly pairing her custom Victoria Beckham sheath with an armful of bangles and patent Christian Louboutins at WWD s 100th anniversary gala in N.Y.C.

Also, at the WWD event, the model strikes a pose in a ruffled cobalt Notte by Marchesa dress, matte black tights and a statement ring.

How did she get all that glitter off? The night after donning a jaw-dropping Halloween get-up, the is pretty in beige chiffon at the Worldwide Orphan’s Foundation gala in N.Y.C.

The actress sticks to a monochromatic look, wearing contrasting shades of red and pink by Lanvin at the Rome premiere of The Kids Are All Right.

Across the pond, channels Lindsay Lohan in a sequined cat suit at the launch of her final collection for Topshop.

The actress jazzes up black shorts and patent pumps with a glinting beaded tunic at the L.A. premiere of For Colored Girls.

The One Tree Hill star opts for a strapless BCBG Max Azria minidress with sheer overlay and leg-lengthening nude heels while making an appearance on Extra at the Grove in L.A.

Good things come in small packages! The petite star packs a fashion wallop in a voluminous skirt layered under a fitted cropped blazer – both by Marchesa – at the Casting Society of America’s Artios Awards in N.Y.C.

TV shows come and go, but fashion is forever! The best dressed starlet hits a fashion high note in a printed chiffon dress with feathered skirt and oodles of baubles at the ACE Awards in N.Y.C.

Glee’s resident goth girl ramps up the red carpet glamour in a Tracy Reese LBD with peekaboo panels, a tulip hemline and studded pumps at the Fulfillment Fund’s Stars 2010 Benefit Gala in Beverly Hills.

DWTS frontrunner Brandy ups the wattage in a silver and blue sequined Karen Zambos mini and daring metallic booties at a celebration for the show’s 200th episode in Hollywood.

The tennis champ flaunts her off-court prowess in a tiered silver frock and putty-colored peep-toes at the ACE Awards in N.Y.C.

goes for full-on glamour in an ivory Stella McCartney gown, sparkling jewels and an elegant bun to celebrate her Commitment to Charity award at the UNESCO Gala in Dusseldorf, Germany.

leaves her downtown N.Y.C. hotel in a wide brimmed hat – matched to her brown Birkin bag – furry vest and denim with knee-pad detailing.

The Fashion Police co-host looks ready to hit the Derby Day Races, topping her black L’Agence dress with a stylish hat at the Melbourne Cup Carnival in Australia.

Just a day before her annual Halloween costume party, takes a stroll through N.Y.C streets channeling the ’70s in a tan corduroy suit, Elizabeth and James sunglasses, platform heels and a beret.

The 90210 star opts for a menswear-inspired look at The Legend of Hallowdega screening in Hollywood, accenting her suiting separates with a plaid tie.

The actress covers those infamous curves in a strapless party frock with beaded detailing, nude platforms and an orange purse at the Peace Over Violence Awards at the Beverly Hills Hotel.

Winter white never looked so sexy! The British bombshell is ravishing in a beaded ivory strapless Roberto Cavalli gown at the Elton John AIDS Foundation Winter Ball in London.

The chic star pairs a navy top with a black pencil skirt and peep toe pumps at the Peace Over Violence Awards in Beverly Hills.

Evoking vintage glamour, the actress sparkles in a black-and-gold dress at the Elton John AIDS Foundation Winter Ball in London.

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