From Wikipedia:
“ In 1993, aged 19, Rex responded to an advertisement in a Los Angeles magazine and agreed to be photographed nude for photographer Brad Posey and his Club 1821 studio. The following year, under the alias "Sebastian", he appeared in solo masturbation scenes for three Club 1821 pornographic films: Young, Hard & Solo #2, Young, Hard & Solo #3, and Hot Sessions III. Archive footage was used in the 2000 films Hot Sessions 11 and Hot Sessions 12.[7][8][9] He says he took the job to pay for rent and food for his girlfriend's two-year-old son. One day, while driving her to castings and watching the child a casting director spotted Rex in the waiting room and the next day he was on a flight to Milan.[6] In 1994 Rex went on a modeling tour for Tommy Hilfiger, before going on to appear in mainstream modeling gigs for Calvin Klein Inc, Versace, and Levi’s.[10][7] In 1995, MTV hired Rex to work as a VJ and kept him on the air for over two years.[11]”