Actress Keira Knightley has blasted wannabe actors who are obsessed with being a celebrity, insisting fame is overrated. The Pirates Of The Caribbean star cannot understand the hype regarding her celebrity status. She says, "It frightens me when kids go 'I want to be famous'. Why? Because you want to go into a restaurant? You know what? If you book, you can get into a restaurant. "Ok, I'm on the cover of a magazine but somebody does the hair, and the make-up and airbrushes the f**k out of me - it's not me, it's something other people have created."