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 McCartneyWhich one is your favorite? Vote in the poll below and let us know!

Plus, see more of our daily favorites in our Look of the Day section! 

Our Favorite Looks!

Your Favorite Designers: A-Z
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