Paris Hilton has denied rumours that she is dating 'Entourage' star Adrian Grenier after the pair were spotted socialising together.
Hilton and Grenier attended the premiere of Leonardo DiCaprio's new environmental awareness film '11th Hour' together.
Hilton was also spotted swimming with Grenier, who plays Vincent Chase in the show, last week.
But a representative for the reality television star has denied rumours of a romance, saying that the pair are "just friends".
