Celebrity Gossip's

Lindsay Lohan has agreed to have sex on screen to prove she's a great actress.

The 20-year-old always swore she would never shoot a sex scene, but Chris Siverston - the director of her new movie 'I Know Who Killed Me' - persuaded her to change her mind so she would get the critical recognition she craves.

Lindsay - who plays a stripper who is kidnapped and has both her legs amputated in the movie - told Nylon magazine: "Chris Siverston is a f***ing genius. We made a deal that I will do any film he wants me to do.

"At first I was like 'I can't do this, I'm getting my leg cut off. I don't want to look like that in scenes, I want to look decent!'

"But that was just me being young and stupid. And I have my first sex scene in it, which I always said I wouldn't do.

"I wanted to do this movie so people can see that I'm a f***ing actress and I've been doing it forever and it's about time people see that. It felt so good to really get to act."

Lindsay first shot to fame as a child star in Disney film 'The Parent Trap'.