Keaton Bullen, 21, a student at New York's Parsons School of Design, has alleged to BBC News he was assaulted by Mr Wang at a club in the city in 2019.
It comes as the high-profile lawyer Lisa Bloom says she is now representing 11 men with misconduct allegations against Mr Wang.
Mr Wang robustly denies all the claims made against him.
Mr Bullen, then 20, was with a friend at the Fishbowl club in New York City when he says he encountered Alexander Wang on 24 August 2019 at about 11:30pm.
