Snooki celebrated her son's first birthday with a pirate themed party.

The former 'Jersey Shore' star and her fiance Jionni LaValle threw the swashbuckling bash with their family and close friends to honour Lorenzo's big day.

According to reports in Us Magazine, the couple invited their nearest and dearest to a marina in Brick Township, New Jersey last week, and they got in the spirit with their costumes.

Snooki was spotted in a red and white striped dress with black leg fishnets and a pirate hat, while Jionni was wearing a matching red and black striped outfit.

Meanwhile Lorenzo was seen in white shorts and a black and white skull t-shirt.

The couple recently revealed their son had taken his first steps when Jionni posted a video on his Instagram account.

Meanwhile, Snooki wrote a blog admitting her baby's first birthday was a ''very special'' and moving occasion.

She previously said: ''My baby boy turned one and it was very special. I'm a very emotional mother to begin with so dealing with my baby turning one is freaking me out!

''Ever since becoming a mother my life has completely changed for the better. Lorenzo was the best thing that has ever happened to me.''