VOTE: This Week's Best Dressed

Starlets including Rachel Bilson were out and about in West Hollywood at the 3.1 Phillip Lim anniversary party while sizzling Scarlett Johansson was overseas promoting a new Mango campaign.

Best Dressed of July 12 - 17

Marvelously Metallic

Rachel Bilson wore a rose-gold shorts suit by 3.1 Phillip Lim with white patent Louboutins for Lim’s anniversary party in West Hollywood.

Perfect in Pearls

Katherine Heigl confidently wore a draped tulle Lanvin cocktail dress with a white and yellow pearl necklace from David Yurman for the premiere of her new romantic comedy “The Ugly Truth” in Hollywood.

'90210' Star Style

Shenae Grimes looked mature for her 19 years in a chiffon ensemble from the 3.1 Phillip Lim 2010 Resort collection with nude patent peep-toes for the designer’s store anniversary party in West Hollywood.

Fashionista en España

Stunning Scarlett Johansson sported a flutter-sleeve satin top and high-waist skirt from Mango in Madrid.

Out of this World

“Gossip Girl” starlet Jessica Szohr helped Louis Vuitton celebrate the 40th anniversary of the first lunar landing at the American Museum of Natural History in a Temperley London military jacket with a dress by designer Anna Sui for Target the Big Apple.

Cream Couture

British songbird Leona Lewis wore a flowing beige and black Pre-Fall 2009 3.1 Phillip Lim dress for Lim’s store anniversary party in West Hollywood.

Zac Attack

Demi Moore looked divine as an ESPYs presenter in a hand-painted silk design from Zac Posen with peep-toe Bally shoes.

Bell Beauty

Kristen Bell paired a 3.1 Phillip Lim draped top with a metallic miniskirt at the first-anniversary party for Lim’s West Hollywood store.

White Hot

Model Miranda Kerr looked killer in a long Calvin Klein halter with a plunging neckline for the ESPY Awards in L.A.