Nicole 'Snooki' Polizzi has given birth to a baby girl.

The former 'Jersey Shore' star and fiance Jionni LaValle - with who she already has two-year-old son Lorenzo - welcomed ''perfect'' daughter Giovanna Marie into the world earlier today (26.09.14).

Snooki shared the happy news on her Twitter page, posting: ''So happy to let you know we had our beautiful daughter this morning Giovanna Marie LaValle. 6.7 lbs, full head of black hair & perfect (sic)''

The 26-year-old star's best friend, Jenni 'JWoww' Farley - who welcomed her daughter Meilani into the world two months ago - has already been to visit her pal and the new arrival.

Posting a picture on her website of her visit to the hospital, with Snooki cradling the baby in her arms, she wrote: ''My best friend gave birth to a gorgeous baby girl .... Giovanna is a stunning 6.7lb perfect angel!(sic)''

JWoww recently admitted Snooki had been acting like a character in 'The Exorcist' during her second pregnancy.

She said: ''I hated my pregnancy. They say [baby girls] take your oestrogen so your hormones are more depleted.

''I don't know if that's true or not because I never had a boy, but I'm looking at Nicole - she loved the pregnancy with Lorenzo. This one, I'm scared of her. It's like 'The Exorcist.' ''