Demi Lovato Cheers on Sister Madison De La Garza at Her High School Graduation!

Demi Lovato supports her younger sister Madison De La Garza at her high school graduation! The 26-year-old “Echame la Culpa singer” and the 17-year-old former Desperate Housewives star teamed up at the event held on Friday (June 7). Demi took to her Instagram Stories to post a series of videos from the big day, screaming