Think you could rock a shag hairstyle as well as Nicole Richie–or are you lusting over Ashley Greene‘s sleek brunette locks? These stars’ styles, along with Claire Danes‘s complete hair-and-makeup, have just joined hundreds of others in our Instant Makeover. Test out celebrity beauty looks on yourself before you commit to can’t-turn-back bangs or a drastic color change. Snap a headshot, upload it and try them on. Then Twitpic your favorites to us at twitter.com/stylewatchmag. We’ll retweet some of our favorites!