Spears' perfume ad restricted

An advert featuring Britney Spears writhing naked with a hunky male model to promote her Curious perfume has been stamped with a restricted rating by British watchdogs.

The 30-second commercial shows the Toxic singer alone in a hotel room fantasising about the man in the next room. The action then quickly cuts to a steamy love scene between the two, with viewers unsure if it's really happening or simply in Britney's imagination.