Who's the Best-Dressed Star?

Weigh in on the style of Jennifer, Beyoncé, Jessica and 17 other celebs – then see who makes the top of the list in PEOPLE's Best & Worst Dressed issue, on newsstands Sept. 15. By Serena Kappes and Melissa Liebling-Goldberg

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GWEN STEFANI

Known for her adventurous mix of color and pattern, the hot mama kept her rock n' roll edge even while expecting 2-month-old son Kingston.