Luke Hemmings and Sierra Deaton just added a new member to their family — the couple quietly welcomed their first baby together, a daughter.
The 5 Seconds of Summer frontman, 29, surprised fans on Instagram when he revealed not only that he and Sierra were expecting, but also that their little one had already arrived. Their joint post included several tender snaps: Sierra during her pregnancy, Luke kissing her baby bump, and a first look at their daughter — though the couple made it clear they’ll be keeping her name, face, and birthday private for now.
“Our best kept secret 🤍 Written and Produced by Sierra and Luke Hemmings,” Luke captioned the sweet carousel.
While fans rushed to congratulate the new parents, Luke also took time to address why they kept the pregnancy and birth under wraps until now. “In our perfect world, we’d keep our daughter a secret forever… for similar reasons we chose to never share our wedding photos from years ago,” he explained in the comment section. “However, going into this next album cycle I’m very aware that her existence would inevitably leak.”
The singer continued with a heartfelt plea for privacy as they enter this new chapter. “To avoid any speculation, we’re posting this now and humbly asking for everyone to respect her privacy. If you see us in public, please avoid taking or sharing photos of her as we don’t plan on publicizing her name, birthdate, or face any time in the near future. Thank you for understanding and for the support. All our love, The Hemmings.”
Though Luke has lived much of his life in the public eye, he’s always taken a low-key approach when it comes to his personal life. Fans may remember that he and Sierra waited quite a while before even confirming their marriage. In January 2024, he casually mentioned it while chatting with *Entertainment Tonight* at the Billboard Golden Globes afterparty. When asked about his eye makeup, he sweetly revealed, “Thank you! My wife did it. Usually I do it for stage but she’s taught me well and she did it tonight. It’s a big event so she did it.”
Later in the same interview, he admitted married life was treating him well. “It’s very good. I love it. She’s here tonight, she’s somewhere in there,” he said with a smile.
Luke had first hinted at his marriage back in 2022, when he posted a TikTok of himself strumming along to Sierra’s song “Little Do You Know” with a voiceover saying, “When you marry the girl that wrote this banger.”
The pair’s love story began in 2018, and they’ve been inseparable ever since. After announcing their engagement in June 2021, following Luke’s romantic proposal earlier that February, they’ve kept their relationship mostly private — and now, they’re starting parenthood the same way.
