Actor Robert De Niro, 68, and his wife, Grace Hightower, have welcomed their second child,

Actor Robert De Niro, 68, and his wife, Grace Hightower, have welcomed their second child, a baby girl named Helen Grace, media reports said Saturday. People magazine reported on its website that the girl was born through a surrogate mother and was in good health. The exact timing of the birth was not mentioned.  Helen Grace is the second child for the couple who met in London in 1987 and married in 1997. Their son Elliot was born in 1998. The Oscar winning actor also has four other children: daughter Drena, 40, and son Raphael, 35, with former wife Diahnne Abbott, as well as 16-year-old twin sons Julian and Aaron, also born through a surrogate mother, with ex-girlfriend Toukie Smith.