London, July 12 - Hollywood actor Jamie Foxx has upset singer Rihanna by embarrassing her in front of revellers at a Las Vegas nightclub.

'The Ray' actor was cracking jokes for fellow party-goers at Sin City's Tao hotspot when he spotted the R&B star and repeatedly asked her to join him on stage and take the mike.

She refused, and Foxx prompted the DJ to blast out her hit 'Umbrella' over the speakers, reports femalefirst.co.uk.

Foxx saw the singer preparing to depart and ordered her to stay, reportedly leaving her 'fuming'.

'Jamie took over the microphone and started doing a show. Halfway through, he asked Rihanna to join him onstage.