Houston's daughter Bobbi Kristina marries

October 12, 2012. Nick Gordon and Bobbi Kristina Brown attending the premiere party for "The Houstons On Our Own" in New York. A rep for the family confirmed Friday Jan. 10, 2014, that the 20-year-old Brown married Gordon. (Associated Press)

Whitney Houston's daughter, Bobbi Kristina Brown, has tied the knot with her friend Nick Gordon.

A representative for the family confirmed Friday that the 20-year-old Brown married Gordon. But the rep did not know where or when the marriage took place.

Brown tweeted about her marriage Thursday, posting a photo of the couple wearing wedding rings with hands on top of each other. She wrote in the caption, "#HappilyMarried. So #InLove. If you didn't get it the first time that is."

In 2012, Brown caused a stir when she was spotted wearing a sparkly bauble on her ring finger. But it turned out she was wearing her mother's ring and was not engaged.

Brown's father is Bobby Brown.

The late Houston left her entire estate to her daughter, her only child.