Presley's publicist, Cindy Guagenti, said the girls were delivered by Caesarean section Tuesday, E! News reported. One weighed 5 pounds 2 ounces and the other was 13 ounces heavier.
Mother and babies were at home and resting, Guagenti said. She did not reveal the babies' names.
Presley, 40, daughter of rock 'n' roll icon Elvis Presley, has been married to her fourth husband, Michael Lockwood, a music producer, since 2006. She is also the mother of Danielle Riley, 19, and Benjamin Storm, 15, from her first marriage to Danny Keough.