Demi MooreD 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! 

Demi's Transformation!

MORE DEMI MOORE:
Demi’s New Ann Taylor Campaign
• Check Out Demi’s Rapunzel Braid
• Try on Demi Moore’s Hairstyles