Big Night Style

Whether you're hitting prom or a summer wedding, steal the looks of party-perfect stars like Hilary Duff, Jessica Biel and more. By Andrea DeSimone

GREEN WITH ENVY

Pop star Rihanna didn't shy away from showing off her dancer's body in her emerald Roberto Cavalli cut-out gown – and was on trend with her bold gold bangles.

Get the Look:
Dress: Try this Niteline green dress at Serendipityprom.com
Shoes: Try these Chinese Laundry Novella heels at Zappos.com