Rachel McAdams and Other Best Dressed Celebs of the Week

The Marchesa Resort 2012 silver sequin gown Rachel donned for the premiere featured a fantastic draped back. Her Christian Louboutin shoes remained mainly hidden by the dress and she also wore Jacqueline Nerguizian gems.

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The Lancôme spokesmodel opted for a midnight blue backless ballerina-style Elie Saab Fall 2011 Couture tulle mini. Emma’s dress included an embellished bodice along with velvet floral appliqué and was combined with Jimmy Choo Vamp sandals as well as a slick hairstyle and bold red lips.

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Emily really stole the show thanks to this Giambattista Valli Pre-Fall 2011 gown with asymmetric sleeves. A black clutch and diamond stud earrings completed the standout red carpet look.

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Lea was flashy and daring in this highly embellished Valentino nude halter gown with a ruffled hemline. Christian Louboutin heels and Neil Lane jewels polished off the look.

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Fergie accompanied her husband and star of the film, Josh Duhamel to the premiere outfitted in a silver mirrored Monique Lhuillier Resort 2012 number. She complemented the form-fitting sleeveless dress with equally gleaming Tiffany & Co. diamond studs, a Jimmy Choo clutch and Christian Louboutin slingback pumps.

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Just like her co-star, Jessica went with a sparkling nude Valentino for the New York City showing. Her Spring 2012 long-sleeve gown was paired with jewelry by Lorraine Schwartz.

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As usual, Amber was absolutely stunning in a belted ivory Alessandra Rich gown with front pockets and an embroidered underlay which was elegantly exposed on the back. Nude Christian Louboutin platform pumps and gold spike stud earrings served as accessories.

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The Glee star also attended the event in a black halter selection by Chloe. A center jeweled bow accent made the dress unique, while Dianna's black satin Roger Vivier clutch and matching Tribtoo Yves Saint Laurent pumps helped anchor the look.

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This elaborate Armani Privé Fall 2010 Couture creation had Paz shining bright at the annual ceremony. The dress had a floral accent on one shoulder and the actress wisely kept accessories to a minimum.

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Paula’s colorful coral Andrew Gn Resort 2012 strapless gown showcased striking waist embellishments. Ruby peep-toes rounded out the look.

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