Bobbi tweeted the news on Thursday along with a picture showing off their wedding bands. "#HappilyMarried," she wrote. "SO #Inlove. If you didn't get it the first time that is."
No word yet on whether Bobbi’s dad, Bobby Brown, or other famous family members attended the wedding.
The couple has had an on and off relationship. They announced their engagement on “The Houstons: On Our Own” reality show in October 2012, but called it off a month later.
In July 2013, Brown announced the engagement was back on, explaining she was tired of people judging their relationship. Nick was raised alongside Bobbi Kristina from an early age, but Whitney never officially adopted him.
“I’m tired of hearing people say 'eww your engaged to your brother or ‘if Whitney was still alive would we be together or would she approve of this,'" BK told her followers on Facebook.
She went on to explain they “aren’t even real brother and sister, nor is he my adoptive brother. In fact, mommy was the one who even said that she knew that we were going to start dating.”
Bobbi added, "People need to seriously stop judging my relationship. Pretty sure it's my own decision who I want to be with.”