Belle Knox

Duke's shocking 1st round upset in the NCAA tournament today really hit hard with Duke porn star Belle Knox ... who tells TMZ Sports she wants to comfort her team ... with her vagina. As we previously reported, Knox offered the Blue Devils free sex toys from her sex toy line if they won the…

The Duke men's basketball team now has all the incentive they need to win March Madness ... because the school's most famous student (sorry Jabari) will have a gift waiting for them if they cut down the nets. TMZ Sports caught up with Belle Knox -- the girl who was recently outed as a student…