Last Night's Look: Hit or Miss?

From the Upper East Side to Paris fashion week, the Gossip Girl is always effortlessly elegant, as she hits the Dior fashion show in a ruffled white dress by the line and Louis Vuitton patent pumps .

The plays up her shape in a dazzling sapphire halter gown with a keyhole cutout and glittering drop earrings at a dinner in Shanghai.

Showing (seriously sexy) support for Barbara Bui during Paris Fashion Week, the singer sparkles in a head-to-toe outfit by the line.

Continuing to promote Breast Cancer Awareness, the actress shines in a majorly metallic strapless dress paired with subtle sandals and long, loose waves at London’s Selfridges.

I Don’t Know How She Does It’s continues to do her thing in N.Y.C., wearing white kitten heels, a Fay coat, leather leggings and a midnight blue statement bag.

The amps up her simple white shirtdress with an oversized patent clutch and eye-catching, stacked pumps while out in London.

Cinching her red balloon-sleeve wrap dress by Mango with a wide leather belt, the star finishes her look with a brooch, necklaces and two-tone sandals in N.Y.C.

Toughening up her favorite leopard print with tiny skulls throughout, the keeps the rest of her look simply sexy as she unveils her new fragrance, Shine, at L.A.’s Mondrian hotel.

Bongo’s visits a Cerritos, Calif., Sears wearing a plaid button-up, gray skinnies and lace-up hiking-boot heels.

N.Y.C.’s newest strolls the West Village in a fitted tank, pegged distressed jeans and beat-up booties.

Gossip Girl’s sexy older woman stands out in a bold, saturated pink Michael Kors sheath and nude-peep toes at an Estée Lauder Breast Cancer Awareness Month event in London.

The Melancholia star updates a retro silhouette at the film’s London premiere with a pretty paisley-print sheer Honor frock paired with black pumps and button earrings.

Footloose’s main attends a special screening of the film at L.A.’s Children’s Hospital in a beige flared Tibi dress, Melinda Maria bangles and matching bow-topped pumps.

The model shows off her mile-long legs in a short suit and black platform booties while out and about in Paris.

Also in Paris for Paris Fashion Week, the glows in a burnt-orange sheath, matching coppery clutch and wedge espadrilles.

The Footloose wears a flower-scattered ivory sheath with black accessories and M.C.L by Matthew Campbell Laurenza earrings to the L.A.’s Promise Gala in Los Angeles.

The Weight Watchers returns to her Chicago hometown to show off her figure in a peplum mini and sparkling booties at the opening of the Jennifer Hudson Weight Watchers Center.

Vampire Diaries’s star goes sweet girlie in an embroidered lilac frock and black pumps at Canada’s MuchMusic studios.

Rocking her signature sexy menswear style, the sparkles at the L.A. Ides of March premiere in a loose-fitting Yves Saint Laurent suit with black bustier and cap toe pumps, also by the line, layers of Neil Lane chains and a Salvatore Ferragamo clutch.

The British fashionista tempers her bold, bright floral dress with a high neckline and ladylike strappy black pumps at a Vogue Eyewear event at N.Y.C.’s Sunglass Hut flagship store.

leggy lady flaunts her gams in a glittery David Meister halter dress, Swarovski clutch and tan sandals at the L.A. premiere of Ides of March.

The What’s Your Number? star settles on a sophisticated peplum Moschino sheath and hardware-adorned Mary Janes for a New York screening of the film.

It’s check-mate for Kate, who pairs a sequined and crocheted mini with a bronze clutch – both by Prada – for the Ides of March L.A. premiere.

The Mary Kay ambassador makes a pause for the cause in a red-hot Monique Lhuillier sheath at the New York screening of the beauty brand’s Inspiring Stories.

The Audrey Hepburn look-alike channels the screen legend in a retro-style vested frock and patent peep-toes at the Paris premiere of Abduction.

Sporting a familiar ensemble, the Five adds some peekaboo lingerie to her sleeveless Dolce & Gabbana pantsuit for a New York screening of the film.

Also at the Five screening, gets graphic in a vintage-style geo-embellished shift.

Talk about literal! The Puss in Boots slips into a knee-high pair, which she wears with an embroidered frock and Lana Jewelry danglers at a photo call in Russia.

Punctuating a blush-pink ruffled gown with yellow nails, tassel earrings and a Nicholai by Nicky Hilton ring, attends the Metropolitan Opera opening-night gala in N.Y.C.

Camilla illuminates the opening of the Gucci Museum in Florence, Italy, in a color-blocked sequin mini cinched at the waist with an embellished belt.

To celebrate her directorial debut for Lifetime’s Five film series in N.Y.C., the gets serious in a leather-sleeve jacket and pencil skirt, adding a little twist with striped pumps and a leopard clutch.

At the N.Y.C. premiere of 50/50, the actress sparkles in a ruffled Georges Hobeika dress, Judith Leiber clutch, golden sandals and Kwiat diamonds.

The young star continues to dress like a red-carpet pro in her dramatic Maje cape dress, hard-sided Edie Parker copper clutch and leopard booties at the Artios Awards in Beverly Hills.

The Good Wife actress wears a great dress – a fitted, strapless black mermaid gown – with oodles of Chopard diamonds and a Judith Leiber minaudière to the Metropolitan Opera opening-night gala in N.Y.C.

Also at the Metropolitan Opera opening night in N.Y.C., Leelee is a pretty prints-ess in a boldly patterned halter and lace-up booties.

Channeling her inner rocker at Las Vegas’s iHeartRadio music festival, the tops a sparkling blouse-and-shorts combo with a cropped blazer and finishes the look with peep-toe booties (and a brand-new do!)

Also at Las Vegas’s iHeartRadio festival, the hits Pure nightclub in a pink-streaked Camilla and Marc mini, matching sandals and a black clutch.

Dolce & Gabbana’s muse wears a cap-sleeve bustier dress, bronze drops and lacy kitten heels – all by the line – to attend a dinner at Milan’s Dolce & Gabbana Gold restaurant following the designers’ show.

The tempers her sexy black leather pencil skirt with a high-neck yellow blouse and fuchsia Fergie Footwear pumps (that benefit Breast Cancer Awareness!) at the iHeartRadio music festival at Las Vegas’s MGM Grand casino.

Glee’s makes the grade in a subtly patterned Katharine Kidd frock paired with strappy gold sandals and Melinda Maria jewels at Variety’s Power of Women luncheon in Beverly Hills.

She’s not saying whether she’s in a relationship, but the fully commits to her boho-chic style in a printed, plunging maxi dress paired with a cross-body bag and pendant necklace at the Hollywood premiere of Cirque du Soleil’s Iris.

“It fit, which is nice,” the actress joked of choosing her curve-hugging printed sheath, worn with simple gray pumps, for the Variety luncheon.

The True Blood glows in her ultra-hot pink Prabal Gurung dress, which she paired with stacked black pumps and a Judith Leiber belt for a Point Foundation gala in L.A.

Mad Men’s saucy secretary plays up her shape in a belted leopard-print St. John dress, worn with bow-adorned kitten heels and a matching clutch to the Rape Treatment Center brunch in L.A.

One of PEOPLE’s best dressed tweens continues to play with fashion, wearing a Versace halter with bold neon accessories to the Coach-sponsored Teen Vogue Young Hollywood bash in L.A.
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