A sex tape allegedly featuring Lindsay Lohan and Calum Best has leaked on the internet.

According to online reports, the clip surfaced after Best sent the video, which claims to show Lohan performing a sex act, to all his close friends.

Best split up with Lohan in July 2007. It was rumoured he dumped the actress because he found her "dull" after she spent a spell in rehab.

A source told Gossip Rocks the Mean Girls star is "freaking out" about the tape.

Still from the tape: http://img237.imageshack.us/img237/6...003copyqh4.jpg

I really hope its her.
Like really hope.

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Do you dare ?

well see now i had no interest in the paris sex tape but this one, this one i might d/led.

i appreciate her deepthroating efforts.

why is he wearing a venetian blind?

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marzipan marzipan marzipan marzipan

I'm shocked this didn't happen sooner.