Rihanna has become the latest celebrity to turn her back on the traditional flash of cleavage for a show of underboob.

The 24-year-old singer was seen flashing the flesh at the Wireless Festival in London's Hyde Park.

Leery fans could get a peek of the bottom of her breasts as she hit the stage to perform an array of hits in an Egyptian-inspired crop top.

But RiRi is not the only the star trying to bring back the underboob.

Other stars spotted sporting the look include Beyonce and Sharon Stone.

IBTimes UK rounds up other celebrities who have jumped on the underboob trend...

What do you make of the trend? Sultry or stupid?