WORST: Britney, hire a stylist! Spears stepped out with her mom, unfortunately wearing a poof-shouldered, sweater dress over black leggings.

WORST: Claudia Schiffer looked like a lost flower child, while out and about in London.

BEST: Zoe Kazan showed off her retro style at a New York screening of The Exploding Girl, belting a flirty dress, and adding over-the-knee boots.

BEST: Sammi Giancola finally made the Best Dressed list! The Jersey Girl looked tactfully put together at JET Nightclub in La Vegas, belting a black mini, in a wide, white statement piece.

BEST: Katey Sagal brought her onscreen style off, hitting the premire of the new FX show Justified in Los Angeles.

BEST: Katherine Heigl wore a dark trench in Los Angeles, which really made her new, darker ‘do standout!

WORST: Kim Cattrall was not looking so Sexy in the City, wearing too many many shades of blue in London.

BEST: Kelly Ripa looked fab in a little doily dress and nude peep-toed heels in New York City.

WORST: Remember when Leighton Meester dressed like Blair Waldorf? Ever since the actress decided to become a singer, her style has gotten too contrived and edgy. The beauty hit La Vegas, in a splattered bandage dress, and hideous, peep-toed, lace up boots.

BEST: Kerry Washington is so gorgeous and classy and looked amazing in a white-piped skirt suite at the International Women’s Day Reception at the White House.

BEST: Sienna Miller dressed up acid wash jeggings with a refined blazer, sweater and oxfords, while out and about with her parents.

BEST: Victoria Beckham rocked an embellished LBD with nude heels and a purse box, for a super glam look.

BEST: Rachel Bilson looked casually cute in her alpaca cardigan, jeans and black boots, adding a blast of color with her red satchel.

WORST: Kate Moss looked like Rachel Zoe, with her enormous vest.

BEST: Mo’Nique looked fab in a purple mini, rocking unshaven legs to see Oprah.

BEST: Mariska Hargitay looked stealthy, traveling in all black threads.

BEST: Lindsay Lohan headed to the Chanel Autumn Winter Fashion Show, wearing leather leggings, with a cocoon-like coat, and carrying a classic, red Chanel flap bag, for a Boho biker look.

BEST: Usher looked super hot, wearing edgy, all-black threads, while out and about on Robertson Blvd in Los Angeles.

BEST: Kristin Chenoweth looked cute and sexy at The 2010 Vineyard Theatre Gala, wearing a white blouse with an embellished mini.

BEST: Kylie Minogue was fiercely in fashion, taking in all of the runway shows during Paris Fashion Week.