The hotel heiress found international fame in late 2003 after a sex tape featuring her and ex-boyfriend RICK SALOMON was leaked onto the internet and has since starred in reality TV show The Simple Life, enjoyed roles in Hollywood movies, written a book and released a fragrance.
Kilmer tells British gay magazine Attitude, "It seems like it's (the notion of celebrity) more extreme than ever now. If you don't look a certain way, or you're not on the front cover all of the time, then you're no one.
"Paris Hilton is a great example. She's famous for nothing. It's what we are celebrating in my country - the nothingness of her fame.
"She's fine with it of course - she made $100 million last year."
Despite Kilmer's distaste for Hilton, she had a brief role in his 2003 film Wonderland.