Last Night's Look: Hit or Miss?

Curves ahead! plays up her shape in a strapless Zac Posen mermaid gown accented with a bejeweled necklace at the Angel Ball benefiting Gabrielle’s Angel Foundation in N.Y.C.

Great Scott! The is mad for plaid as she competes with the red carpet in a scarlet Prada dress at the London premiere of The King’s Speech.

gets seriously stylish in all black for the screening of Latinos Living the American Dream in Hollywood.

Making her latest vogue turn in a magenta Marchesa gown with jewel-encrusted bustier, the globetrotting fashionista’s premiere style continues to reign supreme at the Abu Dhabi International Film Festival screening of her new film Miral.

From head to toe, the actress is as good as gold at an Escada store opening in Munich, Germany, complementing her blonde hair with a sequined strapless dress and metallic peep-toes.

The 90210 star takes on the boys in a menswear-inspired ensemble – complete with skinny tie – at the Choose to Fight On fashion show benefiting the Noreen Fraser foundation in L.A.

The happily single finishes off her cold weather blues – cute toggle coat! – with a sunny knit beret, checkered oxfords and matching purse while promoting her new album Speak Now in London.

Buttoned up in black, the adds an avant-garde twist to her classic look with laceup booties at a celebration for Paul Newman’s Hole in the Wall Camps at NYC Lincoln Center.

After a joyride on boyfriend Olivier Martinez’s motorcycle, the radiant sticks to her biker chic black and gray color palette while out and about in Beverly Hills, including a pair of tough laceup and wedged boots.

Heeding the call of her film’s title, Black Swan’s onscreen vixen pairs her elegant white blouse with a sultry leather pencil skirt and ruffled peeptoes at a photocall in London.

The toughens up a party pink ruffle Dior dress with a cropped leather jacket, opaque tights and hardware accessories at the Vertu Smartphone launch party in N.Y.C.

Though her mom is denying pregnancy rumors, there is no denying curve appeal in a form fitting jersey dress and stacked platforms while out in Miami Beach.

At least she’s stopped bleeding for fashion! The continues to rock mile-high platforms with a fitted charcoal dress, cinched waist belt and a schoolboy blazer.

Rocking out her new do at the 3rd Annual Mango Fashion Awards in Barcelona, the line’s keeps the rest of her outfit simple in a black mini with a cinched waist and strappy sandals.

The actress tames her leopard print skirt with a ladylike mauve blouse – both by Ann Taylor – as she takes in the Ann Taylor Spring 2011 preview at the Gramercy Park Hotel rooftop in N.Y.C.

The City girl is the picture of urban chic in all-black topped by a tweed boyfriend blazer by the brand at the Ann Taylor preview.

The Entourage star is pretty in plum, showing off her killer legs in a short party frock with a cascading ruffle and olive pumps at The Redbury Hotel grand opening in Hollywood.

ups her fashion cred, pairing an asymmetrical olive skirt with a cuffed and tailored James Icon blazer at the new Windows phone launch party in Berlin.

The plays with optics in a black and white pleated Missoni column gown paired with honey tresses and a vampy lip at the 2010 CFDA Vogue Fashion Fund Finalists Celebration at the Chateau Marmont.

Also at the Chateau, teams up black and blue, donning a fitted Christian Cota sheath dress detailed with hand-painted strips, suede pumps and a silky Fay jacket.

The ditches sparkly trousers in favor of refined denim by Hudson Jeans, paired with a bouclé overcoat and a floral blouse – both by Milly – and Ruthie Davis pumps while out and about in Paris.

Looking perfectly polished in a navy tweed Pamella Roland shift and suede platforms, the style writer’s fashion sense is true to form as promotes her second novel Sweet Little Lies in Minnesota.

A sleek maroon Donna Karan dress with gold-accented belt and nude YSL pumps make the most of curves at a Fusion Beauty promotional event in Toronto.

It’s a blackout for the who spotlights her rock ‘n’ roll style in a furry coat at an album launch for Bryan Ferry in London.

looks ready to get down at the Just Dance 2 video game launch in Hollywood, in harem pants accented with a leather jacket and leopard flats.

The Parenthood star looks picture perfect in a floral Ralph Lauren slip dress, chunky knit sweater, buckle belt and cowboy boots at the label’s L.A. boutique for the Dylan’s Candy Bar: Unwrap Your Sweet Life celebration.

The Gossip Girl star shimmers in a multicolored sequined frock accented with a leather belt and simple black heels at the opening of the Elie Tahari boutique at Saks Fifth Avenue in N.Y.C.

90210’s girl next door channels her inner rebel for the Love is Louder event in West Hollywood, topping an olive frock with studded leather blazer and adding peep-toe booties.

Returning to Bella’s brunette roots, Twilight’s sets off her new locks and black lace Valentino frock and Brian Atwood pumps with scarlet lips at Cinema Society and Everlon Diamonds-sponsored N.Y.C screening of her film Welcome to the Rileys.

sweeps into the Elle Women in Hollywood tribute in Beverly Hills in a one-shoulder Prabal Gurung dress sparkling with iridescent paillettes and David Yurman earrings.

Following in the fall footsteps of , proves that sherbet is the color du jour in a sleek coral Calvin Klein Collection dress with a Roger Vivier clutch and a Dana Rebecca ring at the Elle Women in Hollywood Tribute in Beverly Hills.

The German actress boldly takes on another hot hue at Elle’s Women in Hollywood Tribute in a coral Calvin Klein Collection halter dress with a shimmering Bulgari jewels and a Jimmy Choo clutch.

The Grey’s Anatomy injects some romance into her wardrobe, pairing a ruffled Givenchy peasant top with a black flirty skirt from The Row to honor the Andrew Martin International Interior Designer of the Year in West Hollywood.

Bringing old-Hollywood glamour back to the red carpet, the actress poses in a draped black Alexander McQueen dress encrusted with weighty jewels at the Miral premiere in London.

The young actress loses the accessories while taking the plunge in a sizzling aqua Reem Acra dress and Sergio Rossi for Elle’s Women in Hollywood Tribute in Beverly Hills.

The Academy Award winner channels Oscar himself in a golden lace Calvin Klein Collection corset dress, David Yurman jewels and strappy red sandals at the Elle Women in Hollywood tribute in Beverly Hills.

A sequined chiffon dress and beaded clutch by Jenny Packham, Brian Atwood pumps and David Yurman jewelry play up the starlet’s screen-siren beauty at the Elle Women in Hollywood tribute in Beverly Hills.

She’s all laced up! From her strappy shoes to her Bulgari jewels to her delicate chiffon Valentino dress, the actress takes style seriously at the Abu Dhabi screening of Let Me In.

The dares to bare her décolletage in a below-the-knee, gathered chiffon peplum dress with gray Stella McCartney pointed heels at the Esquire House LA’s opening night.

The Gossip Girl dons a tough Lanvin ensemble – complete with a leather harness, studded heels and insect brooch – straight off the Spring 2011 runway at the Spike TV Scream 2010 Awards in L.A.

Aloha! The newly single heads to the opening of The Waikiki EDITION hotel in Honolulu, Hawaii in a plunging purple Hervé Léger mini with tropical orange piping and strappy gold shoes.

Glowing brighter than the candles on her birthday cake, the new celebrates turning 30 in a white-hot lace Georges Hobeika frock with accentuated shoulders and nude pumps at TAO New York’s 10th Anniversary party.

is smoking hot in a strapless gold Reem Acra mini and towering peep toe platforms while presenting at the Spike TV Scream 2010 Awards in Los Angeles.

Also at the Scream 2010 Awards: , vamping it up in a dazzling in a one-shoulder Guishem white mini with black accents and black pumps while accepting the Best Fantasy Actress award.

shows off her green side – in a shimmery white Lela Rose dress and navy Casadei pumps! – hitting the Environmental Media Awards at the Warner Brothers Studios in Burbank, Calif.

The stylish celebrates the grand opening of L.A.’s Esquire House in a tea length black and brown Derek Lam frock and Sergio Rossi pumps.

Emporio Armani’s underwear embraces fall in a pale orange, cap-sleeve J. Mendel dress, a Kara Ackerman ring, Brian Atwood pumps and Joan Hornig earrings at the Spike TV Scream 2010 Awards in L.A.

Everything’s coming up roses for the Mad Men redhead, whose curves bloom in a body-hugging, floral-printed Dolce & Gabbana sheath and shiny peeptoes, at the season finale screaming for her hit show.

Looking sharp in a long-sleeve Alexander McQueen frock, True Blood’s trades in her barmaid attire for the perfect fall party dress with matching Brian Atwood pumps and shimmering Neil Lane jewelry at the Spike TV Scream 2010 Awards in L.A.

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