Girl's nude illusion pic becomes Internet sensation

A picture giving a nude illusion of a girl is going viral around the world.

At the first glance, the photo seems to show a naked girl posing behind a palu00a0-- but after looking at the saucy snap carefully it emerges that the photo is actually an optical illusion created by her friend's bare arm, reports the Sun.

The embarrassing shot has become an Internet sensation around the world.

It appears in an email with the subject "The awkward moment", with the line: "When your friend's fat arm makes you look naked."