Jessica Chastain looks every inch the blushing bride in a gorgeous ivory gown as she ties the knot with long-term love Gian Luca Passi de Preposulo as his family estate in Italy

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They've been an item since 2012 and have kept their romance largely out of the spotlight.

And Jessica Chastain and her partner Gian Luca Passi de Preposulo said 'I do' in a lavish ceremony on Saturday, held in the northern Italian city of Treviso, near Venice. 

The 40-year-old actress her 34-year-old husband looked blissfully happy as they gathered in front of family and friends at the stunning Passi de Preposulo family estate, Villa Tiepolo Passi. 

Wedding bells: Jessica Chastain and her partner Gian Luca Passi de Preposulo said 'I do' in a lavish ceremony on Saturday, held in the northern Italian city of Treviso, near Venice

Jessica stunned in a simple ivory gown with ruched detailing on the strapless bodice and a sweeping train.

The redhead wore her flame-coloured tresses up in an elegant bun, setting off the look with a deep rust lipstick.

The ceremoy was a traditional affair, held in the courtyard against the picturesque backdrop of the traditional property.

Gorgeous: Jessica stunned in a simple ivory gown with ruched detailing on the strapless bodice and a sweeping train

Family abode: The lovebirds said 'I do' in front of family and friends at the stunning Passi de Preposulo family estate, Villa Tiepolo Passi

Elegant: The redhead wore her flame-coloured tresses up in an elegant bun, setting off the look with a deep rust lipstick

Gian Luca hails from an aristocratic family, and their wedding brought together a mix of A-list Hollywood stars and Italian nobility.

Anne Hathaway, 34, was a guest, linking arms with her husband, Adam Shulman, 36, and her The Devil Wears Prada co-star Emily Blunt, 34, as they made their way into the ceremony.

Italian model Bianca Brandolini d’Adda, 29, was also in attendance at the star-studded affair.

Star-studded affair: Gian Luca hails from an aristocratic family, and their wedding brought together a mix of A-list Hollywood stars and Italian nobility

Famous friends: Anne Hathaway, 34, was a guest, linking arms with her husband, Adam Shulman, 36, and her The Devil Wears Prada co-star Emily Blunt, 34, as they made their way into the ceremony

What a location: The ceremoy was a traditional affair, held in the courtyard against the picturesque backdrop of the traditional property

Long-term love: Jessica and Gian Luca have been dating since 2012, keeping a low profile over the years

A source told E! News: 'Italy was a place where they always wanted to get married.

'The wedding was stunning. Jessica’s dress was perfect and you could tell she was very nervous walking down the aisle. The food was delicious.'

Jessica and Gian Luca have been dating since 2012, keeping a low profile over the years.

A source told E! News: 'The wedding was stunning. Jessica’s dress was perfect and you could tell she was very nervous walking down the aisle. The food was delicious'

Close connection: 'Italy was a place where they always wanted to get married', the insider added

Aristocratic heritage: The Italian aristocrat, the former director of public relations for Armani, currently works for Moncler

The Italian aristocrat, the former director of public relations for Armani, currently works for Moncler.

The Zero Dark Thirty actress told W magazine in 2015: 'He's a gentleman. And that's very important to me.

'He's from an old-school Italian family. No one in his family has ever been divorced!'

She also teased that she was 'very, very happy' with Gian Luca, in a rare interview about their romance.

Speaking to Extra‘s Mario Lopez, Jessica enthused: 'It’s a wonderful thing when a career does so well and your personal life goes so well.'

The Zero Dark Thirty actress told W magazine in 2015: 'He's a gentleman. And that's very important to me'

Smitten: She also teased that she was 'very, very happy' with Gian Luca, in a rare interview about their romance

Speaking to Extra‘s Mario Lopez, Jessica enthused: 'It’s a wonderful thing when a career does so well and your personal life goes so well'