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Our favorite outfits of the week—pulled from our Look of the Day top picks—are sleeveless pieces that show off the arms. Our standouts: Mom-to-be Sienna Miller in Boss Black and Pamela Love jewelry, Emmy Rossum in Donna Karan, Rooney Mara in Calvin Klein, Jessica Alba in Michael Kors, and Gwyneth Paltrow in Stella McCartney. Which one is your favorite? Vote in the poll below and let us know! More

Our favorite outfits of the week—pulled from our Look of the Day top picks—are all about ladylike silhouettes and luxe fabrics. The top five: Emmy Rossum‘s knee-length tweed Carolina Herrera sheath, Cameron Diaz‘s retro polka dot Christian Dior design, Kate Bosworth‘s sexy backless embroidered Antonio Berardi dress, Jessica Chastain‘s orange and black Armani Prive look, and Diane Kruger‘s lace peek-a-boo Erdem gown. Which one is your favorite? Vote in the poll below and let us know!

If you can’t wait for the Jason Wu for Target capsule collection, you’re not the only one! Blake Lively, Emmy Rossum, Jaime King and Chloe Moretz were among the celebrities who toasted to the collaboration at the opening of a Jason Wu for Target pop-up store in New York last night, all wearing pieces from the lineup. “I get so excited when I see women wear my clothes,” Wu told us on the red carpet. “I’m such a nerd, I go up to them and I tell them that they look really great even though they don’t know who I am. I just think that for somebody to purchase something that I designed, at any price, is a true compliment and true testament to what I do.” We agree! The line officially hits Target stores and target.com on February 5th, so get your shopping wish list ready by browsing through the full collection in the gallery now.