BEST: Jessica Alba brought her classy style sense to Sundance, hitting the premiere of A.C.O.D. wearing Christian Dior from head to toe.

BEST: Nicole Richie looked uber chic at Elle’s Women in Television Celebration at Soho House, wearing an exposed zipper mini with black studded platforms and House of Harlow accessories.

BEST: Famke Janssen looked gorgeous in emerald green, hitting the Los Angeles premiere of Hansel and Gretel: Witch Hunters in a stunning Temperley London gown that featured a Swarovski embellished criss-crossed back. She finished off the look with an Edie Parker clutch and a gold cuff.

BEST: Taylor Swift steamed up the 40 Principales MusicAwards in Spain, wearing a cutout Kaufmanfranco cocktail dress with Christian Louboutin heels, Ofira earrings and Lorraine Schwartz bling.

BEST: Ali Larter got Grecian gorgeous for the LA Art Show opening night premiere party in Los Angeles, wearing a dreamy Carolina Herrera gown with an Edie Parker clutch.

BEST: Jennifer Lopez kept things white hot and sizzling in Sin City, flaunting her famous fanny in a Kaufmanfranco sheer paneled gown at the premiere of Parker. She finished off the sexy look with a Ferragamo clutch.

WORST: The addition of white Calvin Klein booties to Kate Bosworth’s head-to-toe Calvin Klein ensemble at the Calvin Klein dinner at Sundance was ill-fated.

BEST: Ashley Tisdale looked perfectly put together at the Los Angeles premiere of Movie 43, wearing a girly Philip Armstrong dress with chunky sandals and a Lauren Merkin clutch.

WORST: Oh, Rihanna! The Good Girl Gone Bad left NOTHING to the imagination during a night of clubbing in Los Angeles, wearing a totally sheer black dress with only a pair of thong panties underneath.

WORST: Nicole Scherzinger grabbed attention at the 2013 National Television Award, wearing a see through Ossie Clark gown that was slit to the waist.

WORST: Juno Temple looked like she was wearing a tablecloth with her bright Louis Vuitton checked dress at the MorningStar Farms ChefDance at Sundance.

WACKY: Solange Knowles sported clashing Miu Miu fashion on the streets of London.

BEST: Dakota Fanning rocked a sexy and smart Louis Vuitton skirt with a Miu Miu top to the Very Good Girl premiere at the Sundance Film Festival, finishing off the look with Alaia ankle boots.

WORST: Julia Stiles looked like a 1990’s club girl in her Valentina Shah cowl-necked dress paired with clunky Pelle Moda sandals at The Hallmark Channel’s The Makeover premiere.

BEST: Eva Longoria steamed p the Latino Inaugural 2013 event in a strapless Vivienne Westwood gown that she paired with Martin Katz earrings.

WORST: Diane Kruger hit the Chanel Spring 2013 Couture show at Paris Fashion Week, going a little too far with the French schoolgirl look.

WORST: Demi Moore wore a totally chic Ferragamo dress to the brand’s Spring Runway Collection VIP Dinner in Los Angeles, but her open-toed thigh-high boots didn’t really work.

BEST: Michelle Obama got a stylish start to her second term as First Lady in a gorgeous red Jason Wu gown.

WACKY: Robbing a bank, Kanye? West wore a red mask with white duds to the Martin Margiela Fashion Show at Paris Fashion Week.

WACKY: Britney Spears was up to her old attire antics during a shopping trip in Los Angeles, changing out of her bra-baring sheer top and into another in the midst of her shopping spree.