Megan Fox attends the PUBG Mobile’s #FIGHT4THEAMAZON Event on December 09, 2019 in Los Angeles, California.Photo:Rodin Eckenroth/Getty

Megan Fox attends the PUBG Mobile’s #FIGHT4THEAMAZON Event on December 09, 2019 in Los Angeles, California.

Rodin Eckenroth/Getty

Megan Fox’skids are getting ready to welcome their newest sibling.

“The kids are all super excited for another addition to the family and have promised to help out and pitch in,” Fox shares with PEOPLE.

Fox’s new little one joins her three sons and Kelly’s daughter Casie, 15, whom he shares with ex Emma Cannon.

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer​​, from celebrity news to compelling human interest stories.

Machine Gun Kelly and Megan Fox attend the 2022 Billboard Music Awards on May 15, 2022 in Las Vegas, Nevada.Matt Winkelmeyer/Getty

Machine Gun Kelly and Megan Fox attend the 2022 Billboard Music Awards on May 15, 2022 in Las Vegas, Nevada.

Matt Winkelmeyer/Getty

In apost on X, formerly known as Twitter, Kelly wrote, “Isolating myself in the desert next week to restart this album from scratch. when inspiration flows through me unblocked, we will reach the destination in no time. don’t worry.”

“After all, im about to be a dad again!” Kelly, born Colson Baker, sweetly ended his post.

“Nothing is ever really lost. welcome back 👼🏼❤️,” she captioned the post, using song lyrics from Kelly’s track “last november,” a song about his and Fox’s past pregnancy loss.

Megan Fox.Presley Ann/Getty

Megan Fox attends the GQ Men of the Year Party 2022

Presley Ann/Getty

“They are very excited. He’s basically telling everyone he knows,” the insider said.

“Megan felt nervous early on in the pregnancy, but she feels more relaxed now,” said the source. “She’s trying to enjoy it. She loves being pregnant.”

source: people.com