What's Her Best Look?

From lips to eyes, changing makeup styles is all in a day's work for stars. Vote on the best looks from Ashlee Simpson-Wentz, Sienna Miller and more.

  • MARY-KATE OLSEN photo | Mary-Kate Olsen

Credit: Chance Yeh /PatrickMcMullan/Sipa; PA Photos /Landov

Updated: Thursday Aug 20, 2009 | 06:00 AM EDT By: Katherine Kluznik Rentmeester

MARY-KATE OLSEN

Never shy about changing up her look, M-K highlights her eyes with copper shadow for one fashion event then traces them with black kohl liner at another.