By Sharon Clott Kanter
Updated Nov 11, 2011 @ 1:00 pm
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Credit: D Dipasupil/WireImage; Seth Poppel Yearbook Library

Happy birthday, Demi Moore! The actress turns 49 today, and in celebration, we're taking a look back at the birthday girl's ageless good taste. See her transformation from high school student Demetria Guynes to Hollywood heavy-hitter in the gallery now!