The 'Diamonds' singer posted the image of the duo hugging to her Instagram page last night.
"f**kyopictures i dont wanna leave!!!" she wrote alongside the image. "Killed it tonight baby!!!"
The new image comes just days after Rihanna uploaded an image of Brown - who was convicted of assaulting her and left her with severe injuries in 2009 - lying on a bed.
The duo sparked controversy when they began collaborating on music again and were rumoured to have reunited after Brown split from his girlfriend and was seen kissing Rihanna at an awards show.
Meanwhile, Brown was roundly criticised for his comments about comedian Jenny Johnson on Twitter over the weekend, resulting in him deleting his account.
Listen to Rihanna's 'Nobody's Business' featuring Brown below: