Ex Girlfriend was an American girl group whose line-up comprised Monica Boyd, Julia Robertson, Stacy Francis, and Tisha Hunter. The group was originally formed in the mid-1980s under the group name Petite, consisting of Kimberly Davis, Monica Boyd, Julia Robertson, and Tisha Hunter. Shortly after the release of their debut album Teens (1986), the group experienced a lineup change as Davis departed from the group. The group was reformed as Ex Girlfriend in 1989 in Brooklyn, New York by new jack swing group Full Force, with the members adopting the surname "X" as part of their dynamic.