The political activist and actress tied the knot at the Kennedy compound in Hyannisport, Massachusetts on Saturday, reports People.
Robert's late uncle, President John F. Kennedy, and his wife Jackie once owned the famous location.
The bride wore a white strapless tea-length wedding dress by designer Romona Keveza.
Famous friends like Larry David, Julia Louis-Dreyfus, Sen. Ed Markey, Kevin Nealon and Ed Begley joined the Kennedy family for the celebration.
Kennedy, 60, and Hines, 48, have been engaged since May 2014.