'Love & Hip Hop' Star Chrissy Lampkin -- ARRESTED For Bar Fighting

"Love & Hip Hop" star Chrissy Lampkin was arrested early this morning for allegedly bloodying up a girl at a New Jersey bar ... not exactly a stretch, right?

Edgewater PD tells TMZ ... Lampkin was popped around 2:30 AM for aggravated assault and disorderly conduct ... we're told it was bad enough that the victim required hospitalization. She was bloodied and doctors had to stitch up the area above her eye.

This wasn't pure theatrics ... cameras were NOT rolling.

As for what started the fight ... we're told Chrissy got pissed that the alleged victim sat on the sofa she was sitting on and accidentally bumped into someone. Sounds like self defense to us.