Paris Hilton has reportedly ordered her new boyfriend to have a tattoo of his ex-girlfriend removed, after just two months of seeing each other.

Greek shipping heir Paris Latsis, who is currently dating Hilton, 24, has the letter 'Z' tattooed on his wrist from a previous relationship with Zeta Graff, whom he dated for two years.

But Hilton has reportedly issued him with an ultimatum telling him to get rid of the tattoo or face losing her.

"Paris told him that if he wanted the relationship to go anywhere he had to have it removed," a source was quoted as saying.