Rihanna has investigators keeping Chris Brown in check!

Lili Miss RiRi is about as crazy as the rest of them come. She has reportedly hired a female private investigator to check up on Chris Brown when he's on tour to make sure he's keeping his lips, hands, and the goodies to himself.

Inside sources say "Rihanna secured an additional set of eyes and ears to follow Chris on the road "just to make sure he's not fooling around,...she has even hired an additional 'mole' who will be part of the tour full time … a member of Chris' team, but someone he doesn't realize is also spying on him for Rihanna,"

First banning other chicks from after-parties, now this. Remember that crazy bish in A Thin Line Between Love and Hate, well RiRi is about two steps away from being that chick.