The Started From the Bottom hitmaker was performing at the Palais Omnisports de Paris Bercy venue in France when he brought his pal onstage, much to the delight of fans.
Rihanna joined Drake to perform their hit song Take Care, playfully flirting and dancing with each other during the duet. He even let the Bajan beauty steal the spotlight to sing her own track, Pour It Up.
The pair, who reportedly briefly dated in 2010, was also out and about on Monday night (24Feb14) - Rihanna showed her support for the Canadian rapper at Soixante Dix Neuf nightclub, where he served as a guest Dj.
Drake recently denied the gossip of a new romance with Rihanna, but told Rolling Stone magazine, "She's the ultimate fantasy. I mean, I think about it. Like, 'Man, that would be good'."
He added, "We have fun together, she's cool and s**t. But we're just friends, she's my dog for life."