Paris Hilton is an embarrassment to her boyfriend Stavros Niarchos family. The hotel heiress, famous for starring in a homemade porn film and her wild partying, is back together with the Greek shipping heir, but does not have his parents blessing. A source told the New York Post newspaper: "They refused to meet her last year when Paris and Stavros had dated for a while."Paris even followed him and his family to Hawaii, where they go every New Year's, and they still wouldn't meet her. They think she's tacky."The parents of David Katzenberg, who is dating 'The Simple Life' star's younger sister Nicky, feel the same way about their son romancing a Hilton. A source said his father Jeffrey Katzenberg - the former Disney executive who co-founded DreamWorks, is against the relationship: "Jeffrey thinks the Hiltons are just low brow and that his son is young and should be dating around."Paris, 25, and Stavros, 21, were seen parting in Miami on Friday night, along with Nicky Hilton, 23, and Paris friend Brandon Davis.The 'Stars Are Blind' singer performed a lap dance for Stavros to Billy Idol's 'Mony Mony', and was reluctant to go leave the club at 3.15 am when the shipping heir insisted it was time to go home.