Emily Blunt used props, costumes, and co-stars to hide her pregnancy during the Into The Woods filming.

Blunt plays The Baker’s Wife in Disney’s upcoming adaptation of James Lapine and Stephen Sondheim’s award-winning musical Into The Woods. Her character desperately wants to have children but cannot.

Amusingly, the Edge of Tomorrow actress found out she was pregnant right before filming began. The costume department had to figure out how to hide it.

The Into The Woods cast spoke to Disney twenty-three (D23), Disney’s official fan club magazine, about the movie. They also shared some interesting details about the process of covering up Blunt’s baby bump.

Meryl Streep told D23 that  “they were constantly putting James Corden [the Baker] in front of her belly, raising her apron higher and higher.” Blunt also shared that she “was hiding behind every tree in that wood! Colleen Atwood, who’s the most remarkable costume designer, as everybody knows, was so accommodating. I would say towards the end, every four or five days they were making some adjustments.”

Chris Pine, who plays Cinderella’s Prince, also had to make some changes to adjust to Blunt’s pregnancy. The two actors share a dance scene.

“When we did rehearsals, I was being kind of careful, By the time we shot, it was about two months later and I said to Chris Pine, ‘You need to add 15 pounds to what you felt before. When you dip me, you gotta get yourself in a deep lunge because there’s more weight coming down!'” She told Disney Twenty-Three.

Blunt gave birth to her first child with husband John Krasinski in Feburary. They introduced their daughter, Hazel, to the world via a Tweet.

Pics of kids should only come direct from parents. So I’m thrilled to introduce you guys to Hazel!!! #NoKidsPolicy pic.twitter.com/qVvUTRdllP

— John Krasinski (@johnkrasinski) May 13, 2014

Since giving birth, Blunt has gushed about motherhood. She told Vogue magazine that motherhood was “the coolest thing that’s ever happened to me.”

Try to spot all the ways they hide Blunt’s pregnancy when Into The Woods hits theaters nationwide on December 25.