• ALICIA VS. MICHELLE  photo | Alicia Keys, Michelle Dockery

Credit: Rex USA: (2)

Published: Wednesday December 11, 2013 06:00 AM EST



This Stella McCartney gown gets around more than any other dress in Hollywood (Gwyneth Paltrow, Brooklyn Decker and Edie Falco have all worn it). But the latest two stars to slip into the halter are the singer in yellow and the Downton Abbey star in black.

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