NEW YORK — There’s a new guidette in reality TV star Nicole “Snooki” Polizzi’s family.

Her publicist, Stacey Wechsler, said the former “Jersey Shore” star gave birth to a baby girl on Friday. Giovanna Marie LaValle weighed 6 lbs, 7 oz., and Polizzi and daughter are doing “amazing,” Wechsler said. Polizzi posted on her official Twitter account that the baby has “a full head of black hair” and is “perfect.”

She and her fiance, Jionni LaValle, 27, have a 2-year-old son, Lorenzo. Polizzi, 26, co-stars in an MTV spinoff, “Snooki & JWoww,” with Jennifer Farley from “Jersey Shore.”