Demi Lovato is ready for summer, and the Disney starlet has posted a photo of herself wearing a bikini to prove it!

The Sonny With A Chance star, who has been attending out-patient treatment for her eating disorder, also posted the following on Facebook:

    "I've been working so hard to get healthy and fit.. I can't believe I'm about to do this but I'm so excited.. Here's my bikini time body!"

Way to be confident, girl! Read what Demi said on Good Morning America about her eating disorder ... after the jump.