By InStyle Staff
Updated Jun 06, 2012 @ 4:30 pm
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Scott Weiner/Retna; John Shearer/Getty

With Miley Cyrus's big engagement announcement to Liam Hemsworth today's hottest conversation topic, it's the perfect time to take a look back at the 19-year-old's Hollywood transformation, from a rosy-cheeked Disney star to an all-grown-up red carpet stunner. See the bride-to-be's evolution in the gallery.