With two identical purses – one for "cousin" Alli Sims – Spears comes prepared to shop in West Hollywood. Plus: Angelina & Maddox, Jessica Alba and more

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HANDS THAT ROCK

Fergie wows the New York City crowd at the Fashion Rocks Concert at Radio City Music Hall on Thursday. The "Big Girls Don't Cry" singer later paired up with Aerosmith's Steven Tyler for a rendition of "Walk This Way."

See all the best-dressed stars at Fashion Rocks here.