Last Night's Look: Hit or Miss?

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ASHLEE SIMPSON-WENTZ

The looks holiday-party perfect in her trendy black turtleneck dress and gold statement earrings at the Garfield Hundreds pop-up gallery in Santa Monica.

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CHRISTINA AGUILERA

continues to go Back To Basics on her world tour promoting Burlesque, making her entrance at the film’s Madrid premiere in flapper-inspired dress and signature red lips.

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ASHLEY TISDALE

She may be a Hellcat, but looks simply angelic in her white lace mini, nude platform pumps and layered necklaces at an InStyle Golden Globes party in L.A.

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KRISTEN BELL

Still hot on her Burlesque promo tour, hits the Madrid premiere in a sensational black frock with a glittering embellished neckline by Alberta Ferretti.

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JENNIFER HUDSON

The svelte glams it up in a sexy satin Dolce & Gabbana gown before taking the stage at an Ambassadors for Humanity gala in Hollywood.

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ALEXA CHUNG

The style icon flaunts her chops in a prim button-down tunic, gold purse and Mary Jane heels at the Trophée des Arts gala at New York’s Plaza Hotel.

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MILA KUNIS

The Black Swan star celebrates her Nylon cover at an Armani-Exchange-sponsored dinner by piling on the jewelry over a black-and-white ensemble at L.A.’s Redbury Hotel.

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KERRY WASHINGTON

The Night Catches Us beauty sparkles in a glittering black sheath accented with satin trim at L’Oreal’s Women of Worth dinner in N.Y.C.

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JESSICA LOWNDES

90210’s Lowndes puts on her winter whites, slipping into an icy, cap-sleeved sheath at the Nylon cover event in L.A.

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SHENAE GRIMES

Looking fur-ocious in a shaggy on-trend vest, leather jacket, Hudson jeans, Kate Spade New York purse and boots, the actress cozies up at an UGG store opening in L.A.

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LEIGHTON MEESTER

The Gossip Girl lives up to her queen bee status in an on-trend topper layered over an ethereal slip dress at a Dior store reopening celebration in N.Y.C.

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KIM KARDASHIAN

The busy is back in N.Y.C., wearing a green-and-black printed cut-out number for a taping of the Early Show.

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LIV TYLER

attends the Dior fête in a ruffled one-shouldered frock and black bodysuit draped with a cascade of pearls.

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WHITNEY PORT

weathers L.A.’s chilly temps in a ruffled ivory dress, black blazer and opaque tights at the Devon flagship launch in Beverly Hills.

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CHRISTINA AGUILERA

The Burlesque is as pretty as a Spanish rose, topping her Dolce & Gabbana belted lace number with a cropped jacket while promoting her new movie in Madrid.

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AMY ADAMS

is Dior-ific in a demure bow-front dress and wildcat pumps at a reopening celebration of the brand’s 57th Street boutique in New York.

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CAMERON DIAZ

The Green Hornet mile-long stems make an otherwise simple blazer-and-boots combo a glamorous affair while continuing her press tour in Paris.

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KRISTEN BELL

Burlesque , looks sweet in a pleat-front LBD and classic black pumps.

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KRISTIN CAVALLARI

pairs a sharp-shouldered look with fierce red slingbacks and Coomi earrings at the Peace, Love & Juicy Couture fragrance launch in Los Angeles.

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JAYMA MAYS

The emerging style star braves the N.Y.C. chill in a mint green shift dress paired with gray tights and leopard peep toes outside the Late Show with David Letterman.

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MICHELLE WILLIAMS

Though the Blue Valentine gained 15 pounds for her role in the holiday heartbreaker, she was back in perfect pixie shape for the film’s N.Y.C. premiere, spotlighting her figure in an Azzaro minidress with Judith Leiber clutch.

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VICTORIA BECKHAM

Va-va-Victoria! The proves that her soccer star hubby isn’t the only one in the family with great legs, showing off her own in a sexy slit gown and Brian Atwood pumps at the British Fashion Awards in London.

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CAMERON DIAZ

The Green Hornet steps out at the film’s Moscow photocall in slim black jeans and a tailored tweed blazer flecked with metallic threads.

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DIANE KRUGER

Diane puts an avant-garde spin on holiday wear by accessorizing her festive Chanel Vintage frock with a quilted white bag, patterned tights and knee-high boots at the Chanel Métiers d’Art fashion show in Paris.

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HALLE BERRY

The adds a fierce twist to her pinstriped suit with a leopard-print Jimmy Choo tote at the Hollywood Reporter Power 100: Women in Entertainment Breakfast in Beverly Hills.

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KIM KARDASHIAN

The reality-star-cum-entrepreneur introduces new watch collection in a curve-hugging velvet gown in L.A.

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THANDIE NEWTON

Newton dresses to impress in a geometric print number and plum sandals at the British Fashion Awards in London.

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MICHELLE MONAGHAN

The actress turns heads in a strapless plum confection, Neil Lane jewels and nude patent wedges at the L.A. premiere of Somewhere.

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ALEXA CHUNG

The style icon arrives at the British Fashion Awards awards in a pale pink Chanel frock with delicate feather detailing, dotted tights and platform sandals.

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EMMA ROBERTS

Also at the British Fashion Awards, Roberts gets playful in a cobalt Julien Macdonald dress and platform mules.

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CARRIE UNDERWOOD

The artist and album of the year was red-hot at the American Country Awards in Las Vegas in her Edition by Georges Chakra dress accented with Coomi earrings and Rene Caovilla clutch and shoes.

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ANGELINA JOLIE

Returning to a favorite silhouette, the Tourist balances chic and cozy in her knit Atelier Versace wrap dress and teased tresses at the film’s N.Y.C. premiere.

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CAMERON DIAZ

The Green Hornet looks casually chic at the film’s Rome photocall in a polka dot jacket, skinny James Jeans and two-tone pumps.

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CHARLIZE THERON

At a New York City event benefitting her charity, Charlize Theron Africa Outreach Project, chooses an elegant Versace dress, black blazer and nude sandals by the design house.

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KATE BECKINSALE

Totally tweed! leg-baring mini by Dolce & Gabbana puts a red-carpet spin on the woolen at the Stephen Webster store opening in Beverly Hills.

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LIV TYLER

Getting some fringe benefits from her feathery neon skirt, tempers the wild look with an oversized blazer at the Charlize Theron Africa Outreach Project benefit in N.Y.C.

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ASHLEE SIMPSON-WENTZ

The doting rocks a sparkly miniskirt, slim blazer and blouse – all by Alice + Olivia by Stacey Bendet – for the designer’s holiday party supporting Baby Buggy in West Hollywood.

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KRISTEN BELL

A fiery scorches the Tokyo premiere of Burlesque in an intricately pleated Azzaro minidress, Bavna earrings, Amrapali bangles and black peep toes.

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AMY ADAMS

Offsetting her Grecian J. Mendel frock with scarlet Brian Atwood pumps matched to her pout, the Fighter dazzles with Irit Design jewels at the film’s L.A. premiere.

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KATY PERRY

An unusually demure arrives at the L.A. premiere of The Tempest in an Elie Saab Couture gown, M.C.L. by Matthew Campbell Laurenza bangles and ring and Judith Leiber clutch.

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JESSICA ALBA

Not-so-mellow yellow! The Little Fockers lights up the room in her Miu Miu neon dress at the label’s boutique opening in London.

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ANNE HATHAWAY

The Love and Other Drugs is a wonder down under in a sequined mod Oscar de la Renta minidress and ’60s updo with Jimmy Choo sandals for the film’s Sydney premiere,

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KATY PERRY

manages to flaunt her figure and still look utterly elegant in a curve-hugging, lace-and-sequin Zuhair Murad dress paired with Brian Atwood pumps.

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FERGIE

steals the limelight in a green marabou coat and mile-high nude Jimmy Choo peep toes in London.

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GWEN STEFANI

The No Doubt takes a ladylike turn in a chic yellow Prada gown with black trim before performing at the Kennedy Center Honors in Washington, D.C.

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CAREY MULLIGAN

Carey revs up the red carpet in a striking Prabal Gurung dress with ruffle detail and a Cartier ring at the British Independent Film Awards, where she took home the best actress award for her role in Never Let Me Go.

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EVA MENDES

All that glitters is gold for , who keeps cool at the International Marrakech Film Festival in a one-shouldered, embellished silk Dior gown.

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EMMA STONE

Emma shows off a new blonde do and a corset minidress by Roksanda Ilincic with Dana Rebecca Designs ring and C. Greene’s Pave cuff, Brian Atwood pumps at a Trevor Project event in Hollywood.

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OLIVIA WILDE

Olivia opts for an of-the-moment, one-shoulder Giorgio Armani sheath with Tiffany & Co. jewels for the U.K. premiere of her futuristic film Tron: Legacy.

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JENNIFER HUDSON

The newly svelte offers a modern take on black velvet, showing off her shape in a sexy draped mini and sky-high patent platforms at the Kennedy Center Honors Gala in D.C.

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MARION COTILLARD

The French beauty is très chic in a flowing, sequined black Dior gown and rosy lips at the Marrakech International Film Festival. Vote on Last Week’s Looks! >