WORST: Mary Louise Parker hit The Late Show with DavidLetterman, looking like she was on vacation in a the islands in a tropical Alberta Ferretti frock. The addition of a leather jacket and metallic wedges made matters worse for the Weeds star.

BEST: Serena Williams held court at the Late Show with David Letterman, wearing a red hot Victoria Beckham dress with studded Christian Louboutin Daffodile platforms.

BEST: Elisabeth Moss looked lovely in Dolce & Gabbana lace at the NYC premiere of For A Good Time, Call…finishing off the look with cream colored stilettos.

BEST: Jamie Chung rocked a crafty Cushnie et Ochs cutout dress with silver and cream Zara stilettos to the NYC premiere of Premium Rush.

BEST: Sofia Vergara looked muy caliente at the Academy of Television Arts & Sciences Performers Peer Group Cocktail Reception in Los Angeles, wearing a sexy For Love & Lemon lace mini dress.

BEST: Zooey Deschanel was sweetly styled in Dolce & Gabbana polka dots at the Academy of Television Arts & Sciences Performers Peer Group Cocktail Reception.

BEST: Ashley Tisdale brightened up the streets of WestHollywood, leaving the Nine Zero Salon in a Motel Rocks romper and Joie sandals.

BEST: Maria Sharapova dropped jaws at her Hamptons Magazine Cover Party, wearing a red lasercut leather Valentino dress with sparkling pointy-toed heels and a Tag Heuer watch.

BEST: Lea Michele took the plunge and steamed up the red carpet of the 2012 Do Something Awards in a Giorgio Armani ruffled gown that had a flamenco feel, paired with a Fendi clutch, Jenni Kayne sandals and Samira 13 bling.

WORST: Unless Kristen Bell has a bun in the oven, she should avoid wearing figure drenching shift dresses like this Jenni Kayne Resort 2013. The Hit and Run star paired the attention grabbing and brightly hued frock with Jimmy Choo heels at the 2012 Do Something Awards.

BEST: Ashley Greene showed off her tiny waist at the 2012 Do Something Awards in a Michael Kors Resort 2013 patterned sleeveless number,perfectly finishing off the look with a gold belt, a Roger Vivier clutch and Giuseppe Zanotti peep-toes.

WORST: Basketball Wives star Laura Govan left little to the imagination at the 2012 Do Something Awards, inappropriately attired in a slit-to-the-waist snake dress that plunged down to her tiny waist.

WACKY: Will.i.am showed off his eccentric sense of style at the 2012 Do Something Awards, wearing a bizarre vest, blazer and puke greenshirt with light jeans, espadrille shoes and a plaid cap.

BEST: Eva Longoria looked pretty in purple at the Global Gift Gala, wearing a stunning Alberta Ferretti strapless gown.

BEST: Jennifer Lopez looked sexy in Sin City, hitting her world tour post party at Caesars Palace in a cobalt blue Edition by GeorgesChakra strapless dress with Christian Louboutin heels and a snaky clutch.

BEST: Mandy Moore was elegantly attired in a Lela Rose dress and black heels at the Clos du Bois Rouge launch at the Chateau Marmont.

BEST: Jaime King showed some side boob in a red hot Jason Wu dress at the Clos du Bois Rouge launch at the Chateau Marmont.

WORST: Not a great way to sell your clothes, Avril Lavigne! The newly engaged star promoted her Abbey Dawn clothing line at MAGIC in Las Vegas, not exactly dressed to impress.

WORST: Whitney Port got clad in her own Whitney Eve clashing fashions at MAGIC in Las Vegas.

WORST: Lindsay Lohan showed off her scandalous style sense during a night on the town at The Dream in NYC, baring her belly in a crop top andsheer skirt.

BEST: Nina Dobrev looked pretty in an attention grabbing GUiSHEM strapless cocktail dress and Rachel Zoe heels at the celebration of her Ocean Drive magazine cover in Miami.

WORST: Fergie was a walking fashion disaster in Beverly Hills, wearing an unflattering Carven ensemble with a Louis Vuitton and a Goyard bag and platform, sneaker-style shoes.

BEST: Ashley Greene looked pretty in Donna Karan Atelier pink at the Los Angeles premiere of The Apparition, finishing off the fabulously fem look with Jimmy Choo heels.

BEST: Kirsten Dunst looked beautiful in Jean Paul Gaultier blue at the Los Angeles premiere of The Bachelorette, pairing her maxi dress with a Chloe Bag and Jennifer Meyer necklace.

WORST: Just because you can, doesn’t mean that you should! Ali Larter definitely has a hot body, but her belly baring striped ensemble didn’t do her any favors on the fashion front at the Los Angeles premiere of The Bachelorette.