Demi Lovato is a fan of changing up her hair. She's done the really dark thing. She's had more fun being a blonde. She's even been a fiery red head. But now the 19-year-old singer/actress/X Factor USA judge is thinking pink. Pink hair, that is. She showed off her new cotton candy-colored tresses while getting ready to tape X Factor. Loving my pink hair and obsessed with my new Topshop outfit and Chloe Green shoes. Demi tweeted, along with photo. And in case you need to know, Simon Cowell, Demi's new boss and fellow XFUSA judge, approves of the new look. As he should. Demi looks beyond cute.