Sienna Miller @ Whitney Museum

Party girl Sienna Miller (in her own designs in Sienna Miller in Twenty8twelve)takes some time out from her hectic social and promotional schedule to check out the exhibits at NYC’s Whitney Museum of American Art on the Upper East Side on Thursday. The actress accessorized her look with Chanel sandals and a Balenciaga bag.

Sienna wore a pair of gray high-waisted shorts, metallic sandals and her favorite shades from AM Eyewear with pink sides.