Billy Joel wed longtime girlfriend Alexis Roderick yesterday, turning the couple's annual Fourth of July party at the Piano Man's Long Island estate into a surprise wedding, reports People. The couple, 66 and 33 and together since 2009, are expecting a baby daughter this summer. Joel's 29-year-old daughter, Alexa Ray Joel, was on hand, as was her mom, Christie Brinkley, notes Page Six, who's famously on good terms with her ex. Brinkley Instagrammed a photo of the newlyweds, " wishing the growing family every happiness!" New York Gov. Andrew Cuomo officiated. (More Billy Joel stories.)