The actor, who shares three children with ex-husband Brian Austin Green, is expecting her first baby with boyfriend Machine Gun Kelly.

The Transformers star's revelation comes weeks after she announced on social media that she is expecting her first child with the Bloody Valentine singer.

The “Jennifer’s Body” actress is a proud mom to sons Noah, 12, Bodhi, 10, and Journey, 8, whom she shares with ex-husband Brian Austin Green, 51.

Pregnant Megan Fox shares her kids' reactions to learning that she's expecting her fourth baby, her first with fiancé Machine Gun Kelly in an exclusive interview with PEOPLE.

While most people know Megan Fox as a famous sex symbol from her role as Mikaela Banes in the 2007 live-action Transformers movie, there's more to the Hollywood star than meets the eye. Not only was she named one of the most beautiful women in the world for the better part of two decades,

My maternity style is pretty much the same,” the star, who is expecting her first child with partner MGK, said in a new interview.

Megan Fox and Machine Gun Kelly are "very excited" to welcome their first baby together, a source exclusively tells PEOPLE. "They can't stop talking about the baby," the insider says.

In an interview with PEOPLE, Megan Fox opened up about how her children reacted to the news of her pregnancy, and got candid about her "maternity style."

Megan Fox, who shares three children with ex Brian Austin Green, announced she is pregnant with her and Machine Gun Kelly’s baby. And the rapper had the best response to the exciting announcement.

Megan Fox recently opened up about being pregnant and how her older kids are reacting to the news. In a recent interview, she was happy to note that her sons are “super excited” about meeting their new sibling.