Scarlett Johansson shows off baby bump at 'Captain America: The Winter Soldier' premiere

Scarlett Johansson showed off her baby bump at the "Captain America: The Winter Soldier" premiere Thursday at the El Capitan Theatre in Los Angeles.

The 29-year-old actress had been dodging the pregnancy rumors, but Us Magazine confirmed them on March 3.

"She's about four months along," a source told Us at the time. "The baby was a welcome surprise!"

She was aglow on the red carpet in a cleavage-baring, black-and-white lace Giorgio Armani Prive corset top and pencil skirt.

The news comes just six months after she announced her engagement to French journalist Romain Dauriac, 31. As the "Her" actress posed for photographers, she proudly displayed her stunning engagement ring with her ensemble. The couple has been dating since November 2012, and this will be their first child together.

The baby is reportedly due in August.

Marvel Studios president Kevin Feige spoke out on the news earlier this week, assuring the public that Johansson's pregnancy hasn't affected the script for the upcoming "Avengers: Age of Ultron," in which the actress assumes her role as Black Widow.

"Well, my first reaction was I was very happy for her and very excited for her, and my second reaction was we've gotta move some pieces on the chess board around schedule-wise," Feige explained to Collider on Wednesday.

Despite the physically demanding role, the executive is confident that the movie will go on without a hitch.

"But we didn't change the script at all, which is sort of the most important thing for us in terms of the storyline," he said. "I think the goal is for us to sit here talking about the fact that you would never know that Black Widow was pregnant during the filming of the movie when you see the final version of Avengers 2."

Marvel Studios has confirmed that "The Avengers: Age of Ultron" will debut in theaters May 1.