Is Kelly Rowland engaged to beau Tim Witherspoon?

Speculations are rife that Kelly Rowland is engaged to her boyfriend Tim Witherspoon after she was seen wearing what looked like an engagement ring in an Instagram video.

The video shows Rowland, 33, waving to the camera and unintentionally flaunting the ring.

According to gossip site Bossip.com, Witherspoon proposed to the 'Work' hit maker recently, but they are yet to make an official announcement, Contactmusic reported.

Rowland, who has always been private about her dating life, has been dating her manager on-again off-again for the past four years.