Demi Lovato Supports Kim Kardashian’s Cozy Skims Line on Instagram If you’re a Demi Lovato fan, you know she’s all about supporting other women, including Kim Kardashian. When the KUWTK star, 39, shared a now-deleted Instagram photo promoting her Skims line on Monday, February 10, the 27-year-old pop star was quick to show her love.