Whitney Houston's daughter has made an engagement announcement on Facebook.

Twenty-year-old Bobbi Kristina shared via Facebook Wednesday that she and Nick Gordon will tie the knot.  Bobbi Kristina also used the announcement to clear up rumors about her familial ties to Gordon who her superstar mom took in as a youngster and raised alongside Bobbi Kristina.  She said in her Facebook post that she and Nick are not biologically related, nor did her mom adopt him.  Bobbi Kristina says Whitney even said she knew they would start dating someday.  She also asked the public to stop judging her relationship.  


The couple's relationship came to light last year shortly after Whitney's death.  No word yet on when Bobbi Kristina and Nick Gordon plan to exchange nuptials.