Scarlett Johansson is set to become Hollywood's hottest mom!

The 29 year-old actress is allegedly expecting her first child with fiancé Romain Dauriac, E!News reports.

The baby news comes only six months (Sept 2013) after Johansson announced that she and her French journalist boyfriend, Romain Dauriac, are engaged.

At the time, she was spotted wearing a huge diamond ring at the Venice International Film Festival, and her rep confirmed that the couple are "engaged and very happy."

The pair went public with their romance in November 2012, but this past January, Johansson revealed wedding planning isn't on her agenda at the moment.

In an interview with Parade Magazine, the 'Don Jon' actress was asked if she has started to think about the wedding, her response was, "No, I'm busy planning 'Avengers 2' right now! That's my main focus."

"I've never been a big planning kind of person," she added. "I'd never share it with anybody, but I think more than anything I feel really fortunate to have had this amazing year professionally."

The 'Black Widow/Natasha Romanoff' actress also stated, marriage is one aspect of her life that she doesn't "feel like I need to rush," and will "let that happen organically."

The baby is likely to arrive before marriage is on the cards in that case, and according to sources for TMZ, Johansson has been pregnant for the last five months.

This past December, the 'Her' actress did admit to having a desire to start her own family. "I would like to have my own family, that would be nice," she told Daily Mail. "They say it's never the right time and I am sure that's true, but I think you have to plan it like anything else."

Scarlett was previously married to fellow Hollywood star Ryan Reynolds, which ended in divorce only after three years in July 2011. This will be the first child for either Johansson or Dauriac.

Scarlett Johansson
Scarlett and Dauriac became engaged in September 2013