Demi Lovato without makeup: Which look do you prefer?
"No makeup! Goodnight. xox," the 19-year-old "Give Your Heart a Break" singer wrote.
Lovato looks adorable in the photo with healthy, glowing skin, a sweet smile and hair swept up into a simple bun.
Other stars like Lady Gaga and Vanessa Lachey have also shown their makeup-free faces on Twitter recently, giving fans a look at what's underneath all the glam.