See which stars have added on to their brood with the help of another
Robert De Niro and Grace Hightower De Niro
Helen Grace came into the couple's life via surrogate in December 2011, joining big brother Elliot, 13. The actor has four other children: grown children Drena and Raphael (with ex-wife Diahhne Abbott) and 16-year-old twins Julian and Aaron, also born via surrogate, with ex-girlfriend Toukie Smith.
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