Oscar-nominated actress Scarlett Johansson is preparing to take on her biggest role yet- as a mom. According to TMZ, the 29-year-old is reportedly five months along with fiance Romain Dauriac's baby.

The pair became engaged in September 2013 after a year of dating. During an appearance on Good Morning America in January, the "Her" actress revealed that she has no immediate plans to wed her French journalist beau anytime soon. "I'm not doing any wedding planning," Johansson explained in the interview.

Johansson has endured a rocky few years, with a much-publicized divorce from actor Ryan Reynolds, followed by a failed relationship with NYC advertising executive Nate Naylor. Not long after she split from Naylor, Johansson and Dauriac went public with their relationship.

While the actress insists she and Dauriac will be taking their time walking down the aisle, she has expressed a desire to have children in the near future. Johansson has had a successful acting career for nearly 20 years, so now is the perfect time for her to focus on building a family.

The starlet is also getting ready to promote the release of the much-anticipated movie "Captain America: The Winter Soldier" slated to hit theaters April 14.