Lindsay Lohan will definitely be a Mean Girl if she finds the computer hacker who stole nude photos of her taken by Calum Best.

Lindsay, 21, is said to have posed for X-rated pics taken by the lothario, 26, on his mobile.

And now an online hacker is reported to have got their hands on the snaps.

‘All I know is that someone broke into my computer and left a file on my desktop saying they had the pictures Cal took of me naked,’ Lindsay posts on an online message board.

The actress is fuming and has launched legal action to prevent the pics being posted online.

‘My lawyer knows about it. If I ever find out who broke into my computer, he’s in big s***,’ she says, reports the News Of The World.

See Lindsay Lohan writhe around a pole seductively in this video.