Angelina Pivarnick from 'Jersey Shore' -- Sued Over Staten Island Mall Fight

Angelina Pivarnick sued first, but she did not sue last -- the girl who allegedly fought with the former "Jersey Shore" star is now firing back with a lawsuit of her own ... TMZ has learned.

As TMZ first reported, Pivarnick sued a girl named Kelsey Balzafiore over a fight that went down at a Staten Island mall last November. In the suit, Pivarnick claimed she "was wounded, bruised, and injured and sustained severe shock to her nervous system."

But Balzafiore claims it was Pivarnick and her friend, Jeanine Vaiana, that started the fight with Balzafiore and her friend, Victoria Aviles.

Balzafiore claims she tried to intervene when Vaianaa and Aviles came face-to-face, and it was Vaiana who struck her first. Once she fell to the floor, Balzafiore claims Pivarnick struck her. The fight was broken up soon after.