(Cover) - EN Showbiz - Rihanna has been spotted grinding with a DJ at a nightclub.

The sexy singer partied at La Vie Lounge in New York on Tuesday night and was seen getting up close and personal with Power 105.1's DJ Prostyle. The pair seemed at ease with each other, and hardly left the dancefloor until the establishment shut.

The duo was seen grinding till the lights came up at 4am. They looked pretty cosy and left together, said a source, reports New York Post.

It is thought the pair were celebrating Prostyles birthday, as he later thanked Rihanna for toasting him on his Twitter page.

Rihanna certainly seemed to make an impression on the DJ, who wrote about her several times on the social networking website.

First of all he let his followers know the flame-haired star had arrived at the nightspot, before posting a picture of the pair of them. Me and my girl @Rihanna in the club chilling, he wrote in the caption.

He later said she looked gorge and posted another image of them both enjoying a drink.

Rihanna has been single since splitting from baseball star Matt Kemp last year. She was recently linked to actor Colin Farrell, with rumours the pair were sending each other flirty texts. (C) Cover Media