A.J. McLean has married his long-time girlfriend Rochelle Karidis.

The Backstreet Boys star said "I do" at the Beverly Hills Hotel in Los Angeles on Saturday.

The union has been on the cards for a long time. It was postponed earlier this year after A.J. checked in to rehab for the third time.

The pair were delighted to finally share their special day with their nearest and dearest.

According to Us Weekly, guests included, Kathy Griffin, New Kids on the Block singer Joey McIntyre, former Backstreet Boy Kevin Richardson and fellow Backstreet Boys Howie Dorough and Nick Carter.

The ceremony was officiated by celebrity photographer Tyler Shields.

The singer famously proposed to Rochelle during a live concert on his 32nd birthday last year.

The star took to his Twitter account to share his anticipation about the big day.

"Wedding is tomorrow, Ro and I could barely sleep last night, I think we're a little excited!," he Tweeted on Friday.

A.J. credits his new wife for helping him battle his addictions. He feels blessed to be healthy and happy.

"I love all my fans I love my wife to be and I love my family and friends. Thank u all for never giving up on me and shown me the light! (sic)" he wrote earlier this year.