Robert Kennedy Jr. and Curb Your Enthusiasm actress Cheryl Hines are getting hitched at the Kennedy compound in Massachusetts this afternoon. Cousin Patrick Kennedy says the wedding is at Ethel Kennedy's home in Hyannis Port on Cape Cod. The 60-year-old Robert Kennedy is an environmental lawyer and activist who lives in New York.It will be his third marriage. Hines, 48, has been nominated twice for Emmys for her role playing Larry David's wife on HBO's Curb Your Enthusiasm. (More Robert F. Kennedy Jr. stories.)