A sex tape allegedly starring Lindsay Lohan is reportedly about to be made public, femalefirst.co.uk reports.

The actress, who recently filmed a documentary about child trafficking in India, is said to be the star of a 47-second clip, which could be about to appear on the internet.

A source told the Daily Mirror newspaper, “The video film is dynamite. It is pretty seedy and shows Lindsay engaged in a particular sex act, which, obviously, should remain behind closed doors.

“Lindsay was desperate to start 2010 off on a good footing and this is the very last thing she needs.

“If and when it is released on the internet, via a spurious, unofficial website, there is absolutely nothing she or her lawyers can do about it.”

Hustler is said to be offering more than $200,000 US for the video, which was filmed by a waiter from a chain restaurant.