Kimberly Leadbetter (born November 20, 1979), 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.