Kate Winslet Opens Up About Wearing a Corset While Pregnant During Filming of New Movie

Though Kate Winslet is no stranger to donning vintage clothes for the many historical films she's starred in throughout her career, the actress' latest project, A Little Chaos, posed an interesting new challenge — wearing a corset while pregnant!

"It was like, back to basics, here we go. [But] the corset from that time period actually stops right at your navel, so that was not an issue. It was really just what to do with the boobs!" the 39-year-old said of filming while expecting her and hubby Ned Rocknroll's son Bear Blaze, now 18-months, in a new interview with Us Weekly.

Kate as Sabine De Barra in A Little Chaos.

In A Little Chaos, Kate — who also has kids Mia, 14, and Joe, 11, from previous marriages — plays Sabine De Barra, a landscape artist hired to design the lavish Palace of Versailles gardens during the 17th century.

RELATED: Kate Winslet Talks Bouncing Back After Having Three Kids

Though she kept her pregnancy a secret from the cast and crew at the start of the flick's filming, she confessed she did tell one person she was expecting — actor and director Alan Rickman, 69.

Kate while pregnant with her son, Bear Blaze, in October 2013.

"[I said], 'You just might have to accept that my boobs are going to get massive,'" Kate said with a laugh during her sit-down with the mag. "And he was like, 'I think I can cope with that.'"

A Little Chaos hits theaters this Friday, June 26.