Demi Lovato is proud to say that they are fit and sober in their new era. The 29-year-old artist just released an edgy music video for Skin of my Teeth, where they can be seen looking incredible while submerged in the tub.
Read on to learn about the activities that help her stay in shape, as well as the photographs that prove they work—and don't forget to check out the 30 Top Celebrity Swimsuit Moments to become beach-ready too!