RiRi treats male fan to raunchy lap dance during gig

Rihanna sent a male fan's pulse racing after doing a sexy lap dance on top of him.

The 25-year-old singer pushed her fan, who she plucked out from the front of the audience, to the stage before she leapt on top of him and started straddling him and writhing up and down his midriff, the Sun reported.

Then Rihanna -clad in a kinky black corset - grabbed the man's hand and pushed it against her chest and ran it down her body.