The couple exchanged vows under a white tent in front of some 300 guests, including some of Hines' co-stars from HBO's Curb Your Enthusiasm.
Larry David was on hand, but declined to give a speech during the reception. Actors Julia Louis-Dreyfus and Kevin Nealon were also there, and Lyle Lovett and Natasha Bedingfield were on hand to perform.
Hines wore a tea-length, strapless gown by Romona Keveza and Kennedy, who is an environmental lawyer, wore a black suit and striped tie.
This is the third marriage for Kennedy, who split from Emily Ruth Black in 1994 and from Mary Richardson in 2010. Richardson hanged herself in May 2012, at which time she and Kennedy were still legally married.
Kennedy has two children with Black and four with Richardson.