Today is Demi Lovato’s 20th birthday! The singer and X Factor judge has spent the greater part of this year experimenting with new hairstyles, including going blonde (twice), pink extensions, and a high-fashion, high-up ponytail. What will she think of next? While we wait to see her next mane move, head over to our Hollywood Makeover Tool and try on some of the birthday girl’s best hairstyles. Then, be sure to share your Demi makeover with your friends on Twitter and Facebook—it’ll be a great birthday present for @ddlovato. Click below to get started!