Harry Potter star Emma Watson is threatening legal action after nude pictures of her were found being circulated on the Internet.

Emma - who is currently studying at the prestigious Brown University in America - was forced to call in her lawyers yesterday after hearing the news.

But her representatives have been quick to brand the saucy snaps as fake, insisting the images had been digitally altered in Photoshop.

‘If you look at it you will see that the head is marginally too big for the body,' Emma's spokesperson told the Sun.

‘The angle of the face is physically impossible with the body in that position.'

But lovely Ms Watson could still be forced to take legal action to stop the images from being circulated online.