BEST: Mischa Barton was dressed to thrill at the AstonMartin Vanquish launch in London, wearing an open-shouldered Temperley London dress with Christian Louboutin Daffodile cork platforms.

BEST: Jennifer Hudson showed off her wild side at the 39th Annual Boston Pops Fireworks Spectacular, wearing a zebra-striped Roberto Cavalli gown.

BEST: Zoe Saldana looked sweet in a shimmering GiorgioArmani frock at the Armani Prive show during Paris Couture Fashion Week, pairing the coral color number with black patent heels and a matching clutch.

BEST: Jennifer Lawrence sizzled in a gorgeously patterned summer dress at the Christian Dior Fall 2012 presentation, which she pairedwith a white Dior bag and nude peep-toes.

WACKY: Marc Jacobs donned a Dude Looks Like a Lady look at the Christian Dior Fall 2012 presentation, finishing off the ensemble with totally bizarre platform shows.

WORST: Donatella Versace tried to keep it simple in all black at the Christian Dior Fall 2012 presentation, but her toes hanging out of her heels were impossible not to notice.

BEST: Jessica Alba steamed up the Atelier Versace Fall 2012 show, wearing a sexy studded leather look for the collection.

BEST: Lea Michele brightened up the Atelier Versace Fall 2012 show in an electrifying orange dress from the Spring 2012 collection, which she paired with mirrored heels.

WACKY: Talk about an overload of Versace patterns! Sassy singer M.I.A hit the Atelier Versace Fall 2012 presentation in a Gianni Versace garishly gold ensemble.

WORST: Kim Kardashian did her take on demure dressing at Stephane Rolland, looking like she was getting attacked by the attaché on her dark dress. She was joined by her beau, Kanye West.

BEST: Oui oui, Paris! Diane Kruger looked fabulously French at Chanel Haute Couture, pairing her blue dress with a beret and Christian Louboutin studded flats.

BEST: Kate Bosworth kept it simple and sexy at the Hugo Boss fashion show in Berlin, wearing a black cocktail dress with strappy heels.

WORST: Catullestrophe! Katy Perry experienced a medieval ballerina blunder at the London premiere of Part of Me, wearing a Marchesa Fall 2012 dress with jeweled sandals.

BEST: Beyonce lit up the 2012 BET Awards, showing off her fabulous post preggers body in electrifying fashion. The hot mama rocked a leg-baring neon yellow Stephane Rolland Couture gown, which she perfectly paired with Givenchy sandals and Lorraine Schwartz bling.

BEST: Kim Kardashian looked white hot at the 2012 BET Awards in a skintight Tom Ford sleeved dress and sparkling sandals.

WORST: Tatyana Ali experienced a bumble bee blunder at the 2012 BET Awards in black and yellow.

WORST: Forget your pants Brandy? The sassy singer posed for photos backstage at the 2012 BET Awards, wearing only an embellished Balmain top.

WACKY: Stealing Amber Rose’s style? Nicki Minaj slithered around backstage at the 2012 BET Awards, wearing skintight snake pants withChristian Louboutin heels and a bolero top.

WORST: She’s a movie star? Helena Bonham Carter hit the London streets in a not-so-chic ensemble.

WORST: Demi Lovato had a stage style slip-up in Canada in high-waisted red leather shorts, a fishnet swimsuit and leopard top.