True Story, that bump is fake! Felicity Jones stepped out in NYC on Wednesday, March 20 with a huge pregnant belly -- but, alas, it was just for a new movie role.

The 29-year-old British actress is sporting the fake baby bump for her new film True Story. Jones showed off her new "curves" on set in a tight blue dress while filming a scene with costar Jonah Hill in the streets of the Big Apple. The Like Crazy star waddled behind Hill, 29, who was carrying two big duffle bags.

PHOTOS: Stars on set

On Feb. 28, Hill got pumped up for his new movie role and shared a photo of himself getting his makeup done on Twitter. He wrote, "True Story day 1. Let's go!"

PHOTOS: Guess the baby bump

True Story is a drama about the relationship between New York Times journalist Michael Finkel (Hill) and Christian Longo (James Franco) -- an FBI-Most-Wanted killer who had been living outside the U.S. under Finkel's name.

PHOTOS: Mommy and me

The Rupert Goold-directed film, set for a 2014 release, is an adaptation of a memoir by Finkel.

This article originally appeared on Felicity Jones Sports Huge Fake Baby Bump on Set With Jonah Hill