Rihanna and Chris Brown’s girlfriend have been going at it in the past week or so, but now death threats?! Chris’ new girl is scared for her life! Chris Brown’s girlfriend is scared to leave her house without bodyguards by her side -- and she's telling friends, it's all because Rihanna's crazy fans are threatening to kill her. Rihanna and Karrueche Tran’s feud is getting dangerous now. It started out as a seemingly harmless Twitter and Facebook war. Rihanna arguably took it too far when she posted an ethnically insulting picture on Twitter referring to Tran. But now Rihanna’s friends are taking it so much farther. According to TMZ, her pals have unleashed an avalanche of violent threats on Tran... like they hope Rihanna beats her up, and she should watch her back because they will kill her. Now sources close to Chris Brown’s girlfriend say refuses to leave the house with out his bodyguards protecting her!