The needed paperwork will be impacted by several factors incl. nationality, place of living and area of wedding.
To get legally married in Italy you will need to fill out a nulla osta, to be legalized/ apostilled and then translated into Italian before the documents are handed over to the local ‘comune’. These papers are valid for 4 months, so make sure not to hand them over/apply more than 4 months prior to your wedding day.
Prior to you wedding day you go to local ’comune’ to swear before witnesses and a translator to legalise the documents. You bring these documents to the minister/officiator to be signed during your ceremony.
The minister brings the signed documents to the ‘comune’ for a final stamp. The documents can either be picked up 1-2 week after the wedding, or send to your home address in a pre-filled envelope.