Megan Fox and Machine Gun Kelly are having a baby! The actress, 38, in an Instagram post on Monday revealed she is pregnant with her fourth child, her first with Machine Gun Kelly, 34.

Parenthood isn’t a new role for either star. MGK, for his part, is father to 15-year-old daughter Casie, whom he shares with ex Emma Cannon. Meanwhile, Fox shares sons Noah, 11, Bodhi, 9, and Journey, 7, with ex-husband Brian Austin Green. (Green, for his part, has moved on with fiancée Sharna Burgess, with whom he shares 2-year-old son Zane.)

It's the team-up of platinum blonds! MGK will be heading to The Voice on Tuesday (Nov. 19) to join Gwen Stefani as the coach's playoff advisor for her team, according to People. He previously took the stage on the singing competition show in 2017 alongside X Ambassadors and Bebe Rexha,

Machine Gun Kelly joins 'The Voice' as Gwen Stefani's playoff advisor days after he and fiancée Megan Fox announce they are expecting a baby together.

Machine Gun Kelly joins The Voice as Gwen Stefani's Playoff Advisor, to help give contestants during the high-stakes Playoffs stage of the show.

The Voice! On Tuesday, Nov. 19, the singer-songwriter will join Gwen Stefani on the singing competition show as her playoff advisor, PEOPLE can exclusively reveal. In a clip shared exclusively with PEOPLE from the episode,