De Niro, 75, and Hightower, 63, married in 1997 after meeting in London in 1987, People reported. Together they have two children -- a 20-year-old son named Elliott and a 6-year-old daughter named Helen Grace.
De Niro was previously married to actress Diahnne Abbott from 1976 to 1988. Fox News reported that they have two children together -- Drena, 47, and Raphael, 42. The actor also has 23-year-old twin boys named Julian and Aaron with ex Toukie Smith.