Kerry Schwartz from VH1's "Frank the Entertainer in a Basement Affair" fought as part of a celebrity boxing event in Springfield, MA on Saturday night -- but the good part came afterward ... when she got into it with Angelina from "Jersey Shore."
Kerry -- who you may remember as the girl who had that crazy bug bite incident -- tells us she was partying after her victory when she had a run-in with Angelina over VIP access at the club. The two girls ended up leaving at the same time, when they exchanged words and a series of trashy insults ... before they were eventually separated.
Angelina had no problem telling us she started the whole thing -- it stems from an old beef involving Kerry and her ex-boyfriend, the Seaside Heights cop. She told us, "I started the fight. She’s a loser and honestly she’s gonna get it. I’ll f**k her up.”
Stay classy, ladies.