To announce the birth of his new daughter, Macklemore has released a song featuring Ed Sheeran.
In it he sings about becoming a dad to daughter Sloane Ava Simone with Tricia Davis, who'd been his fiancée for more than eight years before they got married in June.
Ed Sheeran teased fans on Twitter, making them guess which artist he'd appear with on a new track.
But it was Macklemore who eventually made the announcement.
He tweeted: "Our new song. It's called Growing Up (Sloane's song) ft @EdSheeran."
Macklemore announces baby daughter song featuring Ed Sheeran, external
The rapper sings about teaching his daughter as she grows up, offering her advice on dating and school.
Many fans questioned whether Ed's collaboration would be with his mate Taylor Swift joining him on the song.
Watch the new song on YouTube, external
Other guesses were The Weeknd or Selena Gomez - who he has been seen with recently.
Meanwhile, it's been reported that Ed will appear in the latest Bridget Jones film.
Fans were speculating on who Ed Sheeran would collaborate with?
Film crews for Bridget Jones' Baby were reportedly spotted at Ed Sheeran's Croke Park concert last month, starting rumours he'd be in the new Renee Zellweger film.
Ben 'Macklemore' Haggerty revealed his baby news on social media saying that his little girl is now two months old and is already his muse.
He wrote on Instagram: "Our daughter, Sloane Ava Simone Haggerty was born on May 29th.
Macklemore and Tricia Davis attended the Grammy Music Awards together last year
"There is nothing like the joy and happiness that comes from bringing a baby into this universe. She has filled my heart in ways that I never knew were possible.
"She is the love of my life. This song is for her."
As well as having a baby, Macklemore also revealed he got married to Tricia Davis on 27 June.
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