Chris Brown Shuts Down Porn Star Who Posted Junk Pics

Chris Brown doesn't want his junk -- or even his alleged junk -- spread all over the Internet ... so he had his legal team shut down the Twitter page of a porn star who tried to do just that.

Kagney Linn Karter went on a Twitter assault a few days back aimed at CB ... claiming he paid her $2,500 to be his escort. Kagney says CB thought the deal included sex, and when she refused to sleep with him he began bullying her online.

Karter responded with a series of angry tweets, saying things like, "I WILL NEVER F*** A WOMAN BEATER EW DISGUSTING" and "HE IS PURE EVIL :(."

But the tweet de résistance came when she posted photos of a penis which she says was attached to Brown, writing, "i can slap bitches now with chris browns d*** on my timeline all day say some SLICK S*** **pulls out CBs d*** WHAP." Poetry, ain't it?

But the pic and all the Brown tweets are now gone -- as well as everything she tweeted -- because our sources say CB's legal team got her Twitter account suspended.

Twitter policy doesn't bar all nudity, but it draws the line when a user violates someone else's privacy with graphic pics.