From a luxe Beverly Hills luncheon celebrating the most powerful women in Hollywood to the glam packed Anniversary Party of Roberto Cavalli in Paris,
the stars were out in full effect this week, wearing the best, worst and wackiest fashions. RadarOnline.com has all the photos of the wardrobe winners and sinners in our weekly fashion feature!

PHOTOS: The Best, Worst & Wackiest Fashions Of The Week

Katie Holmes showed up to the Variety Power of Women luncheon at The Beverly Hills Hotel, looking more Suri than sophisticated. Honored for her work with the Dizzy Feet Foundation, a charity she started with Nigel Lythgoe, Adam Shankman and Carrie Ann Inaba, the A-list babe experienced a fashion flop in a flowered Louis Vuitton frock, which she paired with black tights and heels.

PHOTOS: Variety Power Of Women Luncheon Attracts the A-Lister's

Rachel Bilson had a busy week overseas, taking advantage of the fabulous fashion shows in Milan and Paris. The ex OC-er prowled around Roberto
Cavalli's swanky 40th anniversary celebration in a wondrously wild floor-sweeping leopard print dress from the designer's collection. Absolute perfection,
Rach!

PHOTOS: Stars Heat Up Milan Fashion Week

What happens when Alexis Arquette meets Bobby Trendy outside of a Los Angeles nightclub? The ultimate fashion DON'T! The two Worst Dressed
re-offenders were definitely the Wackiest sinners of the week, with theirbizarre wardrobe choices.

PHOTOS: Birthday Girl Nicole Richie Parties In Her Bikini In Mexico

Other fashion flops? Nicole Richie learned the Truth About mixing patterns and textures, while in NYC promoting her latest book Precious, while Ice-T's
lady love Coco got a little too wild in a leopard print wrap dress.

PHOTOS: Gemma Arterton's Sultry Style

Gemma Arterton mastered the art of simply chic, hitting the NYC screening of her latest movie Tamara Drewe in an utterly gorgeous Bottega Veneta strapless gown. Eva Mendes also achieved a style score in the Italian designer's duds at the Variety Power of Women luncheon, adding a delightful
blast of color to the carpet.

Who else rocked and shocked on the fashion front this week? Check out RadarOnline.com's weekly feature and find out.

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