Cheryl Hines' ex-husband watched her marry a Kennedy this weekend ... well, her TV ex-hubby.
Hines tied the knot with Robert F. Kennedy Jr. in Hyannisport Saturday ... and her "Curb Your Enthusiasm" costar Larry David was among those front and center.
Julia Louis-Dreyfus, Kevin Nealon, Jeremy Sisto, Ed Begley and Natasha Bedingfield were also there.
The couple wed at the famed Kennedy compound, The reception was thrown at "Teddy's Place" on the estate. It's the second marriage for Hines ... the third for RFK Jr.
Congrats Mr. and Mrs. Kennedy!