The singer tops off her look with a topknot in Miami. Plus: Pink, Halle & Nahla, Johnny Depp and more
Credit: Alexandra Wyman/Getty
Published: Monday Dec 10, 2012 | 05:00 PM EST
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Also at the March of Dimes event: new mom Megan Fox, who stays by hubby Brian Austin Green's side as she chats up fellow mom Molly Sims on Friday.
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