Robert F. Kennedy Jr., Cheryl Hines Robert F. Kennedy Jr., Cheryl Hines

Cheryl Hines is officially a Kennedy.

The Curb Your Enthusiasm actress married Robert F. Kennedy, Jr. at the Kennedy Compound in Hyannis Port, Mass., on Saturday, Us Weekly reports.

Photos: Secret celebrity weddings

About 300 guests attended the wedding, including Hines' on-screen husband, Larry David, as well as Julia Louis-DreyfusKevin Nealon, and Ed Begley, Jr..

Kennedy, 60, is the son of Robert F. Kennedy and Ethel Kennedy, and the nephew of President John F. Kennedy.

The couple announced their engagement this spring after two years of dating.

This is the third marriage for Kennedy. His marriage to Emily Ruth Kennedy ended in divorce in 1994, and his second wife, Mary Kennedy, committed suicide in 2012 while the two were in the midst of a divorce. Kennedy has six children from the two relationships: Bobby III, 29; Kathleen, 26; Conor, 19; Kyra, 18; Finn, 16; and Aiden, 13. Hines, 48, has a 10-year-old daughter, Catherine, from her previous marriage to producer Paul Young.