RDENIRO081607_04_X17230.jpgRobert De Niro and wife Grace Hightower are parents to a newborn baby girl.

Helen Grace was born via surrogate weighing 7 lbs., 2 oz.

De Niro, 68 and Hightower met in 1987 and already have a 13-year-old son named Elliot.

The Oscar-winning actor has two other children with former wife Diahnne Abbott .... as well as twin sons with ex-girlfriend Toukie Smith.