Pregnant Anne Hathaway, 43, shows off her blossoming baby bump in a strapless blue chiffon gown at The Odyssey premiere after sharing surprise baby news

Pregnant Anne Hathaway showed off her blossoming baby bump in a strapless blue chiffon gown at The Odyssey world premiere on Monday night.

The actress, 43, who announced she was expecting last month, plays Penelope in the movie and looked stunning for the star-studded event.

She is the film's leading lady alongside Matt Damon, with Zendaya, Tom Holland, Lupita Nyong'o, Charlize Theron, Robert Pattinson and Travis Scott all starring too.

Matt, 55, stars as titular hero Odysseus, while Devil Wears Prada icon Anne plays his devoted queen, who is forced to fend off potential suitors in her husband's absence.

For the premiere Anne showed off her perfect sense of style in the dress and added a pop of colour to the look with a bright red lip.

Anne already shares sons Jonathan, 10, and Jack, six, with husband Adam Shulman, 45, and announced her third pregnancy with a social media post in late June. 

Taking to Instagram, she gave fans a glimpse at her growing bump while dressed in a draped white top and matching maxi skirt.

She attached the Barbara Lewis song Baby, I'm Yours and also made the title the caption.

'I know that not everybody who wants to be a parent gets to be. I'm just blown away by how fortunate I am,' the actress told People in April as she was named Most Beautiful Woman.

'It went really well for me twice, and that's really lucky,' she acknowledged about her prior pregnancies.

Anne also credited her husband, whom she wed in 2012, with holding down the fort while she works.

'I'm so lucky that he's my partner that I spend my life with.

'If I didn't know that before this past year, I think I really know it now because with absolutely everything he's just, he's on it. He holds it down,' she effused.

The longtime entertainer has five films hitting theaters this year, including the musical-drama Mother Mary, which came out in April.

She plays the movie's titular pop star, who 'reunites with her estranged best friend and former costume designer, Sam Anselm, on the eve of her comeback performance,' per IMDb.

Michaela Coel, Hunter Schafer, Kaia Gerber, Atheena Frizzell, Jessica Brown Findlay, FKA Twigs and Alba Baptista also star.

Anne told Stephen Colbert that Taylor Swift was an inspiration for the project, as director David Lowery is a big fan of the 14-time Grammy Award winner.

'I mean, she was kind of like an angel that I felt like was over our heads all the time,' she told the late night host.

'And I was influenced by her tour film Miss Americana and how vulnerable she just let herself be,' the actress added.

Anne is also starring in Verity, The Odyssey and The End of Oak Street hitting cinemas this year. 

Christopher Nolan-fronted film The Odyssey is an adaptation of Homer's ancient Greek epic the Odyssey, which sees the titular Greek King embark on a perilous journey home after the Trojan War in a bid to reunite with his beloved wife Penelope.

Despite the film being in the trusted hands of Oscar-winning director Christopher, fans haven't quite got to grips with the casting yet.

In what has been dubbed his 'most extreme project to date' alongside an incredibly starry cast - the pressure for Christopher to win over critics is like no other.

Already known for his impressive art and high-budget fare, Christopher's latest film could prove to be his most ambitious yet, with the $250million budget the most expensive of his career, his first shot entirely on IMAX 70mm cameras.