Megan Fox and Machine Gun Kelly’s family is transforming.
The Transformers actress and her former fiancé (real name Colson Baker) welcomed their first child together, a baby girl, on March 27, he shared on Instagram.
"She’s finally here!!" MGK wrote. "Our little celestial seed."
He also explained that Travis Barker helped welcome their daughter through music, adding, "We composed the score of the birth. What an epic journey. Praise God."
Her name has not been revealed.
Megan and MGK couple called off their two-year engagement in December, just one month after Megan announced her pregnancy with a photoshoot and heartfelt message that referenced her previous pregnancy loss.
"Nothing is ever really lost," she captioned the Nov. 11 post, followed by a heart and baby emoji. "Welcome back."
In the photo, Megan—who shares kids Noah, 12, Bodhi, 11, and Journey, 8, with ex-husband Brian Austin Green—can be seen covered in black liquid as she cradles her baby bump.
While the 38-year-old is ready to tackle her next chapter in motherhood, the road to welcoming her new bundle of joy hasn’t been easy. In 2023, the Pretty Boys Are Poisonous author shared that she suffered a miscarriage with her and MGK’s baby.
"I've never been through anything like that in my life," she said on Good Morning America. "I have three kids, so it was very difficult for both of us and it sent us on a very wild journey together and separately...trying to navigate, ‘What does this mean?' and 'Why did this happen?'"
But the two—who were together on and off for four years before their breakup for good—are seemingly committed to being the best co-parents to their family’s newest addition despite the recent feud between MGK and Brian.
While MGK—who shares 15-year-old daughter Casie with ex Emma Cannon—admits that his relationship with his own parents is strained, he wants to end that cycle when it comes to expanding his own family.
“As much as a f--k up people say I am, I pray that I have the connection I didn’t have with my parents with my kid,” he shared on the “Life Lessons” YouTube series in 2015. “When I’m with her, nothing else matters.”
And like all parents, the “maybe” singer just wants his kids to be happy.
"I was just walking behind my daughter in the airport the other day and she just has this walk, it's this pure bounce, she's so excited for life like she's so young in her life," MGK, 34, later shared during an appearance on The Drew Barrymore Show in December 2021. "I just pray to every God that exists that she just keeps that bounce forever and that no one interferes with that."
Meanwhile, Megan has been very open about the ups and downs of her co-parenting journey when it comes to her oldest three children.
“I can only have them half of the time,” she told Glamour U.K. in an interview published in April 2022. “That just is what it is. And in some ways that allows me to have moments for myself, where I can live my life as me, not just always being someone’s mother and that’s nice, but you always struggle with the guilt, kind of feeling, like, ‘I haven’t done enough.’”
And while Megan has been open about her experience with mom guilt, one thing she'll never be sorry for is allowing her children to be exactly who they are. When her oldest child, Noah, began to wear dresses at age two, the mom of four feared for how people would perceive her family.
“I can’t control the way other people react to my children," she continued. "I can’t control the things that other children—that they go to school with—have been taught and then repeat to them."
In the end, Megan knew that the only thing she could control was her unwavering support for her child.
“That’s also why I don’t really put my children on Instagram or social media," she noted. "I’m so proud of my kids."
Read on for a look back on Megan and MGK's romance.
July 2020: How They Met
The couple did their first podcast together and detailed how they met on the set of the movie Midnight in the Switchglass. They also became Instagram official in July when MGK posted a selfie of the couple with the caption, "Waited for eternity to find you again..."
August 2020: Megan Professes Her Love
The actress shared the first photo of herself with her new man captioning it, "Achingly Beautiful Boy... My heart is yours."
November 2020: Red Carpet Official
The couple made their first red carpet appearance at the American Music Awards. The same month, the actress files for divorce from estranged husband Brian Austin Green, with whom she shares three sons.
April 2021: Double Birthday Date
Double date! The duo celebrates MGK's birthday with friends Kourtney Kardashian and boyfriend Travis Barker.
May 2021: iHeartRadio Music Awards
Pretty in pink! Megan supports Machine Gun Kelly as they attend the iHeartRadio Music Awards in Los Angeles.
May 2021: Billboard Music Awards
The lovebirds arrive at the 2021 Billboard Music Awards in Los Angeles.
May 2021: Onstage Love
The two appear onstage during the rocker's show at the Barstool Sports Indy 500 party at Grand Park in Westfield, Indiana.
January 2022: We're Engaged
New year, new relationship status! On Jan. 12, 2022, Megan Fox and Machine Gun Kelly announced on Instagram that they were engaged. "Yes, in this life and every life," the musician wrote on Instagram.
October 2022: Pam & Tommy
The two dressed up as Pamela Anderson and ex-husband Tommy Lee at the annual Casamigos Halloween party.
February 2023: Grammys Date Night
The two embraced on the red carpet on music's biggest night.
May 2023: London Date Night
Megan supported MGK at the unveiling of The 8th Deadly Sin - GOSSIP, a limited-edition ring collection collab by the musician and Stephen Webster in London.
October 2023: Happy Halloween
The two also partied at Vas Morgan and Michael Braun's Halloween party.
October 2023: Kill Bill Couple
The two appeared at the annual Casamigos Halloween party.
March 2024: Megan Gives Relationship Update
The actress confirmed that she and MGK had at one point called off their engagement.
"What I've learned from being in this relationship is that it's not for public consumption," she said on the Call Her Daddy podcast. "So I think as of now, I don't have a comment on like the status of the relationship."
She continued, "What I can say is, that is what I refer to as being my 'twin soul', and there will always be a tether to him no matter what."
November 2024: Baby on Board
The couple shared that they were expecting a baby together with Megan writing on Instagram, "Nothing is ever really lost. Welcome back," alongside a photo posing naked covered in black paint and holding her baby bump.
She also included a picture of a pregnancy test with the word, "Yes."
November-December 2024: Breakup
In late November, shortly after confirming Megan's pregnancy, the duo called it quits, multiple outlets reported Dec. 10.
March 2025: It's a Girl!
The duo welcomed daughter on March 27, 2025. According to MGK, Megan gave birth while listening to a score composed by himself and pal Travis Barker.
The rocker said he named their baby girl Saga Blade Fox-Baker because she's the five-year culmination of "coming, disappearing, coming back again, disappearing, coming back again."
“She is an epic story," he told Today. "That's what saga means.”