0517_best_launch The stars looked super chic this week!

Blake Lively looked beyond beautiful at the "Grace of Monaco" premiere during the 67th Annual Cannes Film Festival in France on Wednesday. The former "Gossip Girl" star stunned in a flowy, floor-length, burgundy gown by Gucci, which featured a geometric neckline, a thigh-high slit and an open back design. The blonde bombshell paired her glamorous gown with gold Casadei sandals, rose-gold and ruby Lorraine Schwartz jewelry, and topped off her lovely look with smoldering eye makeup, a pink lip, and a high braided ponytail.

Cate Blanchett dazzled at the Trophée Chopard event during the Cannes Film Festival in France on Thursday. The "Blue Jasmine" star graced the red carpet a sheer-gray, short-sleeved Valentino gown, which featured metallic-embroidery and jewel embellishments. She accented her ensemble with pink shrimp-shaped Chopard earrings, wore her hair in an elegant up ‘do and kept her makeup looking naturally radiant.

Zoe Saldana wowed in white at the "Grace of Monaco" premiere during the Cannes Film Festival in Cannes, France on Wednesday. The "Rosemary’s Baby" star glowed in a gorgeous floor-length Victoria Beckham gown featuring an asymmetrical ruffle detail on the bodice, a pleated skirt, and a gold chain link belt, which she accessorized with rose-gold jewelry and gold Christian Louboutin sandals. The actress added a pop color with a bold red lip and styled her beautiful brunette locks in loose curls.

Click "Launch Gallery" above to see more chic celebs from this week -- including Rebecca Romijn, Lea Michele and Jane Fonda!

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