The oldest member of the Jonas Brothers, 22, who announced his engagement this summer, exchanged vows with 23-year-old Danielle Deleasa on a snowy Saturday at Oheka Castle in Long Island, New York.
According to reports, Joe and Nick Jonas served as his best men. The ceremony held 400 guests, including Demi Lovato.
The former hairdresser was walked down the aisle by her father and wore a silk-and-crystal flower in her hair because she was wearing one the day that she met Jonas.
The bride and groom exchanged Jacob and Co. wedding rings, which they designed for one another.
The newlyweds confirmed the news to People: "We're so happy that we're finally married and we were able to share the special moment with family, friends and loved ones."
The couple met in the Bahamas in 2007.