Attended by Kathy Griffin, New Kids on the Block singer Joey McIntyre and BSB's Kevin Richardson, Howie Dorough and Nick Carter, the couple's evening ceremony was held at the posh Beverly Hills Hotel, and officiated by celebrity photographer Tyler Shields.
Saturday's nuptials were a long time coming for the pair, who postponed saying "I do" when McLean checked into rehab for the third time earlier this year.
"I really miss and love [Rochelle]. You are my whole world and I cannot wait to spend my life with you," he recently tweeted, linking to his then-fiancee's Twitter handle. "Without you here, I am lost!"