WORST: Mischa Barton, what happened to The Beautiful Life? The actress hit a She and Him concert in Los Angeles, wearing un unflattering polka-dot romper with bright, red shoes and lipstick.

BEST: Amanda Seyfried looked terrifically trendy, wearing distressed combat boots and carrying a grommeted Prada bag, while dining at Urth in West Hollywood.

BEST: At the Broadway opening of Come Fly Away, Edie Falco chicly donned a black, white and red paisley dress with Christian Louboutin peep-toed heels.

BEST: Gwyneth Paltrow was a casually chic Burberry babe in London, wearing a classic trend with distressed denim and grey suede boots.

WORST: LeeLee Sobieski wore hiking boots with her red carpet attire to a special screening of Leaves of Grass in NYC.

WORST: The Situation wore another graphic t-shirt, under a pinstriped vest, belting his denim with a bold buckle at an event at the Hard Rock Hotel & Casino in Hollywood, Florida. Of course, the Jersey Shore star couldn’t help but show off his abs.

BEST: Jessica Lowndes took her 90210 style to London, looked uber-hip in a black and white party dress, adding black booties, and bold link necklace.

BEST: Alessandra Ambrosio showed off her bombshell bod in a sassy, one-shouldered Watercolor-Beaded Bandage Dress from the Herve Leger Pre-Spring 2010 Collection. How much did this gorgeous dress set the supermodel back? A hefty $3800!

BEST: Miranda Kerr looked tres glam in an emerald green, silk halter dress and nude, patent heels.

BEST: Victoria Beckham looked casually Posh in a sheer black blouse, grey skinny jeans, which featured ankle zippers and black booties, glamming out her gear with oodles of jewels, including an Hermes cuff, and her beloved Birkin bag.

BEST: Katharine McPhee painted eggs at the Pepsi event Ideas and Grants in Los Angeles, looking totally trendy, pairing a white blazer with distressed boyfriend shorts and fierce wedge sandals.

WORST: Emma Watson attended an event in NYC, wearing an out of character Christopher Kane Fall 2010 leather and lace, embroidered dress, which featured a corseted bodice with Flame Pumps by Casadei.

BEST: Sienna Miller looked citysmart in grey skinny jeans, a lightly-hued blazer and black oxfords.

WORST: Serena Williams may have been a winner on the court in her Texas barmaid inspired uniform, but she failed to score on the fashion front!

WORST: Candice Bergen attended the Broadway opening of Come Fly Away wearing a themed coat, which featured embroidered peacocks, butterflies and… jellyfish?

BEST: Keri Russell hit the NYC screening of Leaves of Grass looking startlingly chic in all black.

WORST: Courtney Love was a haute mess in NYC, wearing garter-like tights with black and grey threads.

BEST: Kristin Cavallari showed off her bangin’ bod in a skintight Donna Mizani one-shouldered, cutout mini, rocking YSL Woven Slingback Platform Sandals n her pretty feet.

WORST: Phoebe Price was on the prowl in Los Angeles, in a hot pink mess of a dress, which barely kept her assets under control.

WORST: Is this a dress or a bathing suit coverup? Even The Situation was chuckling over Kelly Bensimon’s way-too-short shirt/dress at the Hard Rock Hotel & Casino in Hollywood, Florida.