Others, however, have been less secretive; Marvel Studios' president of production confirmed her pregnancy in an interview about the script for 'The Avengers: Age of Ultron'. Kevin Feige expressed his joy and excitement for her in a conversation with Collider.com: "My initial reaction was joy for her, then the realization that we need to adjust our schedule."

He added, "However, we have not changed the script, which is very important to us in terms of the story." Feige's comments confirmed reports that the 29-year-old actress is expecting her first child with fiancé Romain Dauriac, 31, with a rumored due date of August.

While Scarlett has yet to publicly announce the news, Feige revealed his intention to hide her pregnancy so that audiences wouldn't know Black Widow, aka Natasha Romanoff, was pregnant while filming. Feige stated, "Our goal is for audiences to watch 'Avengers 2' and not realize that Black Widow was pregnant during production."

His comments came before Scarlett attended the Captain America: The Winter Soldier press conference in Beverly Hills on Wednesday. Dressed in a tight cream top and a tailored cream jacket, the actress made no mention of any baby bump.

While the star hasn't officially confirmed it, a source told Us Weekly that she's about four months pregnant, describing the baby as a "fun surprise." Another insider told the outlet, "She's so excited to share the news!"

TMZ reported that she's five months pregnant, suggesting she got pregnant shortly after Romain Dauriac proposed with a vintage Art Deco diamond ring. Access Hollywood reporter Liz Hernandez shared a photo of her with Scarlett at the press conference, captioning it "Hanging out with Scarlett Johansson."

While Liz showed off her toned midriff, Scarlett kept it low-key in a strategically chosen loose-fitting top and bright jacket. During the press conference, Scarlett sat behind a desk, looking flawless as she discussed her role in the blockbuster.

She also talked about her involvement in the Glasgow-based film Under The Skin. Speaking about her celebrity life in an interview with The Metro, she mentioned, “Aspects of this job mean that I constantly feel the need to protect my personal life, my family, my partner, my lifestyle, my address and everything else.”

The 29-year-old reflected on a past incident where her computer was hacked, leading to a nude photo being posted online. “I had that horrible hack a few years ago, which made me feel paranoid, but I try not to let it affect me,” she said. “Once you accept your identity as a recognizable person rather than trying to maintain a ‘normal’ status, it becomes much easier to fit in.”