The New Edition star, who had Bobbi Kristina with the late Whitney Houston, will marry girlfriend Alicia Etheridge today (June 17).
Brown, who divorced Houston in 2006, will exchange vows with Etheridge in a private ceremony in Honolulu.
According to the New York Post, Bobbi Kristina has opted out of joining the couple for their Father's Day nuptials.
The 19-year-old will apparently spend the day shooting scenes for her upcoming Lifetime reality show in New York.
An aspiring singer and actress, she also just wrapped filming on the new season of Tyler Perry's For Better or Worse.