Demi Lovato is owning a slippery tumble she took over the holiday weekend. The former "X Factor" judge shared a slow-motion Instagram video of her pooslide slip at KIIS FM's summer pool party, which took place at the WaterMarke Tower in downtown L.A. on Sunday. She also managed to promote her newly released upbeat single "Cool for the Summer" in the process. Lovato, 22, who was wearing sky-high neon platforms while performing, lost her footing and face-planted — hard — on the wet stage. But the smiling pro picked herself right back up and promptly leaped into the adjacent pool. Hey, the party must go on!