Kimberly Leadbetter (born November 20, 1979), better known by her professional stage name Mona Lisa, is an American pop and R&B singer-songwriter, actress, model and record producer. She is best known for her debut single "Can't Be Wasting My Time" featuring the hip hop group Lost Boyz, which was featured on the Don't Be a Menace to South Central While Drinking Your Juice in the Hood soundtrack, as well as her debut album 11-20-79.
In 2011, her collaboration with labelmate DL, "First Klass (That Lyfe)" was released as a digital single. It's the lead single for the King of Paper Chasin' soundtrack. Her song, "Once Upon a Time" (written by Dennis Cooper) appeared in the film, The Heart Specialist which was released in 2012.