Chris Brown and Rihanna Engaged?

Rihanna has sparked rumours of an engagement to Chris Brown by wearing a diamond eternity band on her ring finger. 

The singer flashed the sparkler as she cuddled up to her on/off boyfriend on their first public outing since they reconciled.

Chris sat with his arm draped around Rihanna's back as she leaned against him at the Grammy Awards - just four years after he viciously assaulted her on the eve of the event in 2009.

Riri repeatedly flaunted her ring finger adorned with the jewellery at the bash and as she headed to the after party in Los Angeles on Sunday night.