Paris Hilton is a working girl…Paris Hilton and a chiseled male model shoot another ad campaign for sportswear giant Fila aboard a yacht in Marina Del Rey, Calif. on Monday.

The 26-year-old hotel heiress has been the brand’s ambassador for about a year.Last year, Paris traveled to South Korea to endorse a Fila sportswear collection. I got to admit this is one of the sexiest shoots I have seen her in…