After five years of dating, Jessica Chastain will marry her boyfriend Gian Luca Passi de Preposulo in northern Italy this weekend. Ahead of the ceremony, the 40-year-old star and her 34-year-old Italian man celebrated their relationship with a big bash! On Friday, the happy couple was spotted leaving a pre-vows party with a large group that included Anne Hathaway, according to People.

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Jessica Chastain and Gian Luca Passi de Preposulo will marry in Italy Photo: David M Benett/Getty Images for Vanity Fair

Taking a page from George and Amal Clooney's book, the two-time Oscar-nominated actress and her husband-to-be held a pre-nuptial reception on the romantic islands of Venice. Anne, who became tight with Jessica while filming their 2014 hit film Interstellar, attended the gathering with her husband Adam Shulman. Earlier in the week, People reported that Jessica was seen in Venice with Gian and several family members from both sides. Local reports are saying that the couple will tie the knot on Saturday, three hours from Venice at the Passi de Preposulo family estate, Villa Tiepolo Passi. The aristocratic family has owned the lavish villa since the1800s.

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Friend Anne Hathaway attended Jessica Chastain's pre-wedding bash Photo: Michael Kovac/Getty Images for AF 

Gian comes from one of Italy’s most noble families. His lineage dates back to the year 973, when his family set down roots in the city of Bergamo. Despite the Italian government no longer recognizing the Passi de Preposulo’s aristocracy, the family still uses their count and countess titles. That, of course, means that the Zero Dark Thirty actress might be able to put the title “Countess” on her glittering resume.

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Though the couple has been together since 2012, their relationship has been kept very private. The red-headed bombshell rarely discusses her private life in interviews, save for a memorabe moment on the 2013 Oscars red carpet when she coyly revealed to Extra's Mario Lopez that she was “very, very happy” with Passi de Preposulo. “It’s a wonderful thing when a career does so well and your personal life goes so well," she said."

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Jessica Chastain wished her Italian boyfriend a happy Valentine's Day Photo: Instagram/@jessicachastain

Jessica doesn’t shy away from opening up on her own terms, though. Just last Valentine’s Day, The Help leading lady posted a loved up snap of her and Passi de Preposulo to her Instagram page. She captioned it: “Some things are worth the wait.” Jessica won't be waiting much longer for her man, who works in the fashion industry. Gian previously served as the Director of Public Relations for Armani and now works for the French high fashion brand Moncler.

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