Last Night's Look: Hit or Miss?

The Grey Gardens star leaves her ’20s look behind for a ’60s-influenced Andrew Gn jeweled halter gown, Badgley Mischka earrings and a Lucifer Ver Honestus ring and bracelet at the film’s L.A. premiere.

The State of Play star heads for Late Night with Jimmy Fallon in a L’Wren Scott belted sheath, Sergio Rossi heels and a Brian Reyes striped coat.

The expectant star covers up her baby bump in a flowing multi-print Etro dress while on the streets of West Hollywood.

The Obsessed star dares to bare in her plunging beaded Brian Reyes dress, paired with a tuxedo jacket and strappy satin sandals at the Grey Gardens premiere.

The 90210 star gets edgy with her asymmetrical zipper-front dress and cut-out booties at the premiere of The Informers.

The actress shows off her newly blonde hair as she walks on Rodeo Drive in high-waisted MiH jeans and a metallic blazer.

The Star Trek actress continues her stylish tour of Europe, promoting the film in a red bow-topped Prabal Gurung minidress and strappy black Emilio Pucci sandals.

The Samantha Who? star leaves no question about her style savvy in her belted black dress and Ippolita Silver jewelry at the Cedars-Sinai Medical Center Women’s Guild luncheon in her honor.

The actress promotes Herbal Essences haircare in Milan in trendy baggy trousers, a plaid shirt and Louis Vuitton sandals.

The 24 star plays up her curves in a belted Catherine Malandrino sheath with ruffled sleeves and Swarovski jewelry as she leaves the Late Show with David Letterman.

The 90210 actress stands out at the Grey Gardens premiere in a chartreuse one-shoulder frock with a bold, green belt.

The actress – and spray tan queen – shows off her bronzed glow at the A/X Watches launch in L.A. in a white Balmain minidress with gold paillette accents and strappy sandals.

Putting a sexy spin on menswear, the Desperate Housewives star eschews the expected button-up shirt and attends the A/X Watches launch in L.A. in just a bow-accented A/X Armani Exchange vest and extra long trousers.

Continuing her fashionable promotional tour for Grey Gardens the actress heads to the Late Show with David Letterman in a sleek off the shoulder Giambattista Valli dress with voluminous puff sleeves and two-tone Giuseppe Zanotti sandals.

All eyes are on the Mommywood author, who hosts her book’s N.Y.C. release party in a chic strapless ruffled plum frock and black pumps.

The star rocks rolled-up pegged khakis and a sleeveless printed top for the A/X Watches launch in L.A.

The actress dazzles in a flutter of printed chiffon by Zac Posen and matching satin sandals at the New Yorkers for Children New Year’s in April: A Fool’s Fete event in Manhattan to benefit kids in foster care.

The Heroes star goes green in a one-shoulder frock at the Armani Exchange watch event in L.A.

Living up to her show’s name, the Dollhouse star dazzles to showcase the series at PaleyFest in a plunging lilac Moschino Cheap and Chic frock accented with sequins at the bust and T-strap sandals.

Showing her support for youth in foster care at the New Year’s in April benefit, the Dragonball star is elegant in a chiffon Dior gown of tiered ruffles in N.Y.C.

The One Tree Hill star stays sexy in a strapless blue and black color-block Alexander Wang minidress at the A/X Watches launch in L.A.

Admitting her look was inspired by ’20s star Clara Bow, the actress dazzles at the N.Y.C. premiere of Grey Gardens in a shimmering beaded Alberta Ferretti gown, Dior marabou feather wrap, Roger Vivier clutch, vintage Fred Leighton jewels and hair tucked under into a ’20s-inspired bob and topped with a chic tulle veil.

The actress soars in a chic pink feathered Marchesa frock and bow-topped peep-toes at the New Yorkers for Children event in Manhattan.

Showing her support for boyfriend Zac Efron, the actress hits the Hollywood premiere of his film 17 Again in a blush-colored Zac Posen minidress accented with a bold geometric Linea Pelle belt and matching Camilla Skovgaard sandals, and orange Nancy Gonzalez clutch.

The singer grabs lunch with husband Jay-Z (not pictured) in Manhattan in casual skinny jeans and a cozy sweater accessorized with heels and a white woolen hat.

Showing off her svelte figure, the talk show host heads to The Late Show with David Letterman in New York, wearing a ruffled green Thread Social halter dress and classic black pumps.

The Hills star keeps her famous figure under wraps in a draped blue Issa kimono dress and strappy Christian Louboutin sandals at the L.A. premiere of Into The Blue 2: The Reef.

The 17 Again star dazzles at the film’s L.A. premiere in a jeweled maroon Marchesa gown and Fred Leighton gems.

Emphasizing the “little” in LBD, the actress dazzles on the 17 Again red carpet in a sleeveless black micro mini and sky-high patent platforms.

The heiress creates a buzz in a flouncy yellow and black striped dress at a book launch in Amsterdam.

It’s all about keeping things cute and casual for the actress, who tops her dark denim jeans with a strapless printed minidress at the Loomstate for Target launch in Venice, Calif.

The actress is in step for spring in her ruched lime green Erin Fetherston dress, tie-dye blazer, Swarovski jewelry and strappy Jimmy Choo heels at the 17 Again premiere.

The actress keeps things colorful at the Loomstate for Target launch in Venice, Calif., accenting her sky-blue strapless Shoshanna frock with cherry-red Jimmy Choo sandals.

The Grey Gardens star is thoroughly modern in her Narciso Rodriguez striped dress and red Miu Miu pumps while promoting her film in N.Y.C.

The singer embraces the strong shoulder trend in her military-inspired Balmain jacket and skinny Anlo jeans while dining out in N.Y.

The reality star gets ruffled up in her soft Camilla and Marc frock and matching peeptoe pumps at the Los Angeles launch of Tori Spelling’s new book, Mommywood.

The Mommywood author celebrates her book launch in a festive green one-shouldered Ina Soltani dress, Neil Lane jewels and scarlet lips.

The Star Trek star is out of this world in her draped gray dress and towering platform pumps at the Paris photocall for the film.

The talk-show host introduces the Electrolux Kelly Green line of appliances in Anlo jeans, a bold yellow top and a loose scarf.

The True Blood star keeps it classic at a PaleyFest event for the show in a sleek Max Azria LBD and matching accessories.

The reality star shines in a sapphire wrap minidress, pointy-toe pumps and a bold Swarovski cocktail ring to host the grand opening of the club Opium at the Seminole Hard Rock Hotel & Casino in Tampa, Fla.

Heading to a family brunch in her Easter best, the actress shows off her sweet side in a floral printed dress, gray cardigan and chain-strap tote in Beverly Hills.

The Hills star goes short and sexy on the streets of West Hollywood in a black Hervé Léger miniskirt, Chanel vest and strappy Gucci platform sandals.

Living up to 90210’s luxe zip code, the actress is chic in a flirty black See by Chloe frock with white accents and geometric slingbacks at the Paley Fest event in Beverly Hills.

The One Tree Hill star goes casual in torn denim, a white button-up and an extra-large hobo while doing a little shopping in L.A.

The heiress goes cheap and chic in a peacock feather frock from Matthew Williamson’s H&M capsule collection at Prive in Las Vegas.

Pairing skinny gray jeans with a flirty chiffon top, the 90210 star dazzles at the Paley Fest event in Beverly Hills.

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