Rihanna has taken her renewed friendship with ex-boyfriend Chris Brown into the studio to record a new duet for her forthcoming album.

The R&B beauty has been growing close to Brown ever since a restraining order against the Kiss Kiss singer was lifted last year, two years after he was charged with assaulting Rihanna during an argument on the eve of the 2009 Grammy Awards.

They teamed up twice in the recording studio in 2011, and now, weeks after Brown split from his model girlfriend Karrueche Tran, they have collaborated on a new song, titled Nobodies Business, for Rihanna's Unapologetic project.

The Umbrella hit-maker confirmed the duet news this week when she posted a photo featuring the handwritten track listing for the album on her Instagram.com page.

Rappers Eminem and Future have also landed appearances on the new record, which is due for release later this month.

Eminem and Rihanna already have a hit track record in the studio - they teamed up for the megahit Love the Way You Lie.

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