Rihanna and Chris Brown appear to be very much back together, if the "Umbrella" singer's latest tweet is anything to go by.

After insisting she was single in a post on December 18, the pretty R&B star was spotted with Brown at the Los Angeles Lakers' Christmas Day basketball game, and now she has jetted off to the Ivory Coast to be with the Kiss Kiss singer as he prepares to perform at the Kora Awards in Abidjan.

And it seems Rihanna is keen to ring in 2013 as her ex's new lady love after posting a telling tweet on Sunday.

She wrote, "Are u still down baby? Are u really bout that life? Is you down for the ride?.......here we go again."

The couple split in early 2009 after a headline-grabbing fight, which left Rihanna battered and bruised and resulted in assault charges for Brown.

Brown split from model girlfriend Karrueche Tran earlier this year amid reports he had fallen in love with Rihanna again following a series of recording sessions with his ex.

Grainy video footage of Rihanna and Brown arriving in Abidjan has been obtained by celebrity blogger Perez Hilton.