Anne Hathway was among the guests attending the pre-marital feast celebrating Jessica Chastain and her fiancé Gian Luca Passi de Preposulo in Italy on Friday night.

The 40-year-old bride initially befriended the 34-year-old Oscar winner on the 2013 set of Christopher Nolan's sci-fi epic Interstellar.

The Manhattan-based BFFs also both appeared in the documentaries - Letters to Jackie: Remembering President Kennedy (2013) and The First Monday in May (2016).

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Gal pals: Anne Hathway (L) was among the guests attending the pre-marital feast celebrating Jessica Chastain (2-R) and her fiancé Gian Luca Passi de Preposulo in Italy on Friday night

Jessica beamed as she held the arm of her handsome 34-year-old groom, who's currently the co-founder of Prosecco wine company, FIOL.

Chastain looked radiant in a red embellished mini-dress and snakeskin Louboutin booties selected by her stylist (and wedding guest), Elizabeth Stewart.

Gian just so happens to be a bonafide Italian count, whose aristocratic family dates back almost a thousand years in Treviso.

When the two-time Oscar nominee carefully stepped into a boat on the Venice canal, the former Benetton Rugby Treviso player protectively placed his hands on her lower back.

Castmates: The 40-year-old bride initially befriended the 34-year-old Oscar winner on the 2013 set of Christopher Nolan's sci-fi epic Interstellar

'Love my golden twin!' The Manhattan-based BFFs also both appeared in the documentaries - Letters to Jackie: Remembering President Kennedy (2013) and The First Monday in May (2016)

The Juilliard grad from California will reportedly wed Preposulo on Saturday at his noble family's estate, Villa Tiepolo Passi, in nearby Carbonera.

Jessica's Wilde Salomé director/castmate Al Pacino is rumoured to be walking her down the aisle since her estranged, biological father Michael Monasterio passed away in 2013.

The Miss Sloane actress first met Gian in 2012 while he was working as Director of Public Relations for Armani.

Love Italian style! Jessica beamed as she held the arm of her handsome 34-year-old groom, who's currently the co-founder of Prosecco wine company, FIOL

Scarlet fever! Chastain looked radiant in a red embellished mini-dress and snakeskin Louboutin booties selected by her stylist (and wedding guest), Elizabeth Stewart

Marrying up: Gian just so happens to be a bonafide Italian count, whose aristocratic family dates back almost a thousand years in Treviso

Hands on: When the two-time Oscar nominee stepped into a boat on the Venice canal, the former Benetton Rugby Treviso player protectively placed his hands on her lower back

'He's a gentleman,' Chastain gushed to W Magazine in 2015.

'And that's very important to me. He's from an old-school Italian family. No one in his family has ever been divorced!'

The Cannes Film Festival juror was previously in a long-term relationship with writer-director Ned Benson that ended in 2010.

Setting: The Juilliard grad from California will reportedly wed Preposulo on Saturday at his noble family's estate, Villa Tiepolo Passi, in nearby Carbonera

Pictured Thursday: Jessica's Wilde Salomé director/castmate Al Pacino is rumoured to be walking her down the aisle since her estranged father Michael Monasterio passed away in 2013

'Some things are worth the wait': The Miss Sloane actress first met Gian in 2012 while he was working as Director of Public Relations for Armani

Chastain gushed to 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!'

Deadline reported on May 20 that Jessica will produce and star in Seducing Ingrid Bergman, which is based on Chris Greenhalgh's 2012 novel about the Casablanca actress romancing war photographer Robert Capa.

And on April 26, the Women's Marcher wrapped her role as poker entrepreneur Molly Bloom in the Aaron Sorkin drama Molly's Game - due out later this year - with Kevin Costner, Idris Elba, and Chris O'Dowd.

Meanwhile, Anne donned a halter floral frock and blue suede shoes selected by her stylist Penny Lovell alongside her husband Adam Shulman.

Next gig: Deadline reported on May 20 that Jessica will produce and star in Seducing Ingrid Bergman, which is based on Chris Greenhalgh's 2012 novel about the Casablanca actress (L) romancing war photographer Robert Capa (R)

Make-up room: And on April 26, the Women's Marcher wrapped her role as poker entrepreneur Molly Bloom the Aaron Sorkin drama Molly's Game

The Colossal actress and her 36-year-old James Banks Designer - who are parents of 15-month-old son Jonathan - will celebrate five years of marriage on September 29.

It's hard to believe that Hathaway used to date Raffaello Follieri, who was deported to Italy in 2012 after serving four years in a Pennsylvania prison for masterminding the despicable Vati-Con scandal.

Careerwise, the Golden Globe winner just signed on to produce and star in an untitled romantic comedy for STXfilms - according to Deadline.

In bloom: Meanwhile, Anne donned a halter floral frock and blue suede shoes selected by her stylist Penny Lovell alongside her husband Adam Shulman

Still going strong! The Colossal actress and her 36-year-old James Banks Designer - who are parents of 15-month-old son Jonathan - will celebrate five years of marriage on September 29