Megan Fox welcomed her fourth baby, her first with ex-fiancé Machine Gun Kelly, on Thursday.
The 34-year-old rapper confirmed the birth of their baby girl by sharing a black and white video of him sweetly stroking his newborn's fingers.
'She’s finally here!! our little celestial seed,' Kelly captioned the post.
The actress already shares three sons Noah, 12, Bodhi, 11, and Journey, 8, with ex-husband Brian Austin Green.
Meanwhile, Kelly, welcomed his only other child, Casie, with Emma Cannon in July 2009.
The announcement comes just hours after Kelly blasted Green in a shock direct message on Instagram.
Megan Fox welcomed her fourth baby on Thursday
Brian, 51, posted the message from Machine to his Instagram stories Thursday morning - along with his thoughts on it.
Fox and Kelly, 34, split in November after she reportedly discovered he was speaking to other women behind her back. It is unknown if Megan has already given birth.
Machine's direct Instagram message to Brian said: 'Stop asking when our child is gonna be born. you the FEDS,' adding a rat emoji and a police officer emoji.
'Quit calling TMZ and focus on that apology you owe me for speaking on my name in public, Machine continued. 'You chose the wrong one to f*** with mr child actor. Go back to cereal commercials.'
Brian publicly shared the message on his Instagram stories - along with his thoughts, writing: 'I didn't know "child actor" was something bad. Leo, careful. He may be coming for you next.'
Brian is referring to Leo as in Leonardo DiCaprio, who is also a former child star.
DailyMail.com has to to Brian and Machine Gun Kelly's reps for comment.
The 34-year-old rapper confirmed the birth of their baby girl by sharing a black and white video of him sweetly stroking his newborn's fingers
This marks the birth of her first daughter and first child with ex-fiancé Machine Gun Kelly; seen in 2022
Megan and Brian share three children together: Noah, 12, Bodhi, 11, and Journey, eight.
They were married from 2010 until 2021.
He has since moved on with Sharna Burgess; they share a son together named Zane, born in June 2022.
Machine is referring to Brian slamming him in February.
Last month, Brian took to his Instagram stories to call out Machine, writing: 'Bro. Just be honest for once in your life. 'Stop caring so much about how you're perceived that you will try and drag other people.'
Brian attached Kelly's track, Don't Let Me Go, to his social media post.
The reason why former Beverly Hills 90210 star wrote the message on his Instagram stories was because Machine questioned the narrative that surrounded his relationship with Megan.
Machine shared pictures of himself on January 28th looking outside a window and off the camera - while shirtless.
He wrote as the caption: 'How can "sources say" when the sources haven't said anything.'
In December, Brian expressed regret that Megan is navigating her latest pregnancy while dealing with the fallout from her break-up.
The announcement comes just hours after Kelly blasted Green in a shock direct message on Instagram
Megan and Brian share three children together: Noah, 12, Bodhi, ten, and Journey, eight. They were married from 2010 until 2021; seen together January 13, 2013
He was asked about his thoughts on her split from Machine, telling TMZ: 'I didn't even know.'
The cameraperson then proceeded to tell him about the text messages Megan reportedly found in November that led to her calling it quits with Machine.
Adding: 'How old is he? ... He's in his 30s, isn't he? ... But in your 30s, like, f**k. Grow up. Like, she's pregnant.'
'I just want the best for her. I want the best for the baby. I want the best for our kids. That's a shame,' he said to TMZ. 'I'm heartbroken about it because I know she's been so excited. And the kids are so excited for life and the change and all of that.'
Brian called the situation 'tragic' and noted that he does not know 'the facts.'
Megan pulled the plug on her relationship with Machine over Thanksgiving - after reportedly discovering he was speaking to other women behind her back.
Megan is currently pregnant with her and Machine Gun Kelly's first baby together - which she had announced in November.
Their five-year romance came to an end over Thanksgiving weekend while they were on holiday in Vail, Colorado, according to TMZ.
They split after Megan 'found material on MGK's phone that was upsetting, and it made her want him to leave the trip early,' the source said.
Kelly, born Colson Baker, left the trip earlier and they have not seen each other since.
An insider recently claimed that Megan wanted to just 'focus' on her pregnancy.
Fox, who shares three children, Noah, 11, Bodhi, nine, and Journey, seven, with ex-husband Brian Austin Green, revealed her pregnancy on November 11
Fox and Kelly previously suffered a miscarriage
The insider told People: 'They tried to make things work for many years. It was exhausting for Megan.
'She's done with him now. She just wants to focus on the baby and her boys now.'
She posted a picture of her with her pregnant belly and a snap of her positive pregnancy test - to one of Machine Gun Kelly's songs in the pregnancy reveal, which she shared on November 11.
Fox and Kelly previously suffered a miscarriage.
Megan captioned the post: 'Nothing is ever really lost. Welcome back,' adding a heart emoji.
They split after Megan 'found material on MGK's phone that was upsetting, and it made her want him to leave the trip early,' the source said; seen December 19, 2022
Megan and MGK started dating in 2020 after she split from Brian following 10 years of marriage.
They got engaged in January 2022 with the couple briefly splitting in February 2023 but working things through and getting back together - but not getting engaged again.
Megan previously revealed she believes she manifested the rapper turned rocker into the person he is, adding that she manifested him when she was four years old.
'He's literally my exact type that I've been manifesting since I was four. I'm also four years older than him. So, I think I made him.'
Adding: 'My thoughts and intentions grew him into the person that he is, who knows what he would've looked like or been like if it wasn't for me.'
The couple met on the film project Midnight In The Switchgrass in March 2020.