They kept their personal lives secret like pros.
In 2017, the actress gave birth to her second daughter Maya, and she did it, as they call it, "on the job" During the filming of Wonder Woman, Gal was five months pregnant, and she refused to use a body double in the fight and chase scenes against the director's recommendations. The expectant mother did not want anyone to know about her pregnancy, so makeup artists and special effects had to work hard to take care of that. For example, in scenes that were filmed using a greenscreen, Gal’s belly was wrapped in green cloth, and then was made to look normal in post-production.
During the filming of X-Men: Days of Future Past Halle Berry was 3 months pregnant. The actress did not want to tell anyone about it until the child was born. As a result, the crew had to shoot scenes with Halle’s character as fast as they could, so the belly did not grow in size, and everyone would be able to see it.
Scarlett got pregnant in 2015, when they started filming Avengers: Age of Ultron. The actress feared for the child's health, so all the action scenes were shot with body doubles. Actually, she had three of them. And these scenes were shot not only from the back, but also from the front, and then using special effects swapped their faces.
The British actress found out that she was pregnant in 2013. Since the star doesn’t like talking about her personal life, she tried to hide it until the very last moments. The happy news coincided with the signing of a contract for a movie Into the Woods. Emily did not say anything to the director until she felt sick at the end of the first trimester — just two weeks before the start of rehearsals. The director was nervous about whether she could be filmed at all, but with the help of a costume designer, it all worked out.
When Kylie Jenner got pregnant by rapper Travis Scott, she abruptly disappeared from all the social media and posted only selfies and archive photos. On February 1, 2018, Kylie shared the joyous news on Twitter announcing that she then became the mother of a beautiful baby girl. The reality star also apologized to her followers for her disappearance and said that she did not want her pregnancy to be discussed by people around her.
Always smiling actress Cameron Diaz became a mother for the first time at the end of 2019, although the whole world did not even know that she was expecting. According to the actress, she and her husband Benji Madden had been unable to conceive a baby for a long time, so when it finally happened, she didn't want to share it with anyone in fear that something bad might happen.