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


"I gravitate toward simple and somewhat form-fitted clothes," says the Oscar winner about her style, which alternates between casual elegance (center) and classic couture.