Justin Bieber raps with Wesley Snipes at Cannes

Pop star Justin Bieber surprised guests at a nightclub in Cannes, France this week (beg19May14) by taking over the microphone to rap with actor Wesley Snipes.

The Baby hitmaker has been on the French Riviera to enjoy the festivities that coincide with the annual Cannes Film Festival, and now footage has emerged of him giving an impromptu performance at a party for The Expendables 3 cast on Monday night (19May14).

In the video, Bieber is seen shirtless rapping Tupac Shakur's hit Dear Mama at the Gotha Club in Cannes, while other snaps show him engaged in a "rap battle" with Snipes.

Club bosses posted a picture of the pair on Twitter.com with the caption, "At Gotha Club, you never know what to expect... Rap Battle : #JustinBieber vs. #wesleysnipes... Awesome!"

Another video taken at the same nightclub in Cannes shows the troubled pop star climbing on stage to wish hip-hop star Busta Rhymes a happy birthday. In the clip, taken on Sunday (18May14), Bieber is seen pouring what appears to be Champagne over the stage, before leading the crowd in a rendition of Happy Birthday to the rapper, who turned 42 on Tuesday (20May14).