Kayla Harrison is on the move ... one of the most accomplished women in combat sports history is signing with Dana White's promotion, and will fight fellow legend Holly Holm at UFC 300!
White made the big announcement late Tuesday night, explaining 33-year-old Harrison, a 2x Olympic gold medalist and 2x PFL champion, to an exclusive deal ... ending 16-1 KH's tenure with Professional Fighters League -- where she was one of the promotions faces since her signing in 2018.