Justin Bieber Partying with Jose Canseco's Daughter???

Sooo ... Justin Bieber left a Hollywood nightclub with a smokin' hot model last night -- and our sources tell us the mystery woman is Jose Canseco's daughter Josie. Click 'SHOW MORE' for related Video Proof Justin Bieber DOMINATES Yet Another Sports! Justin Bieber -- 'F*** Pacquiao!!!' Justin Bieber -- Ringside for BFF's Boxing Debut ... Lil Za Wins!!!! Justin Bieber -- I'm Not Floyd Mayweather's 'Sidekick' ht