The trailer is here to Demi Lovato’s new You Tube documentary!Demi Lovato’s new You Tube documentary gives us an inside look at Demi’s life! #hits931artistdemilovato Demi Lovato Opens Up About Dating, Drugs, And Confidence In New Doc Trailer Via www.mtv.com Demi Lovato opens up in the first trailer for her new YouTube documentary, “Simply Complicated.” 10/10/2017 2:20 PM