Celebrity Central / Top 25 Celebs
Credit: John M. Heller/Getty; Jason Merritt/WireImage
Published: Monday November 12, 2012 16:00 PM EST
More from PEOPLE
See More News
231 of 817
Katy gives her Temperley London gown the hippie-chic treatment by letting it casually hang off one shoulder, but Ashlee plays it straight with minimal accessories.
Copyright © 2014 Time Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.