If you’ve ever screamed the lyrics to "Price Tag" in a car with your friends, it probably feels like Jessie J has been around forever. But honestly, when you look at the calendar, the math hits a bit differently. As of right now in 2026, Jessie J is 37 years old. She’ll be turning 38 on March 27th.
It’s a weird age in the music industry. You’re not exactly the "new kid" anymore, but you’re far from being a legacy act. For Jessie—born Jessica Ellen Cornish—this year isn't just about another birthday or a number on a Wikipedia page. It’s about a massive, high-stakes comeback that follows the most terrifying year of her life.
Jessie J Age and the 2025 Health Battle That Changed Everything
Most people know Jessie J for that glass-shattering vocal range. But lately, the conversation has shifted from her high notes to her sheer resilience. In March 2025, right as she was gearing up to drop her first new album in nearly a decade, she found a lump.
She was diagnosed with early-stage breast cancer at age 37.
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It’s the kind of news that stops time. But in typical Jessie fashion, she didn't just disappear. She actually delayed her surgery so she could perform at Capital FM’s Summertime Ball at Wembley. Can you imagine? Standing in front of 80,000 people, knowing you have a mastectomy scheduled for the following week. She later joked in interviews that she "pissed off a lot of people" by waiting, but she needed that moment for herself—as Jessica, not just as a patient.
The Recovery Timeline
- June 2025: Underwent a mastectomy on her right side.
- August 2025: Hospitalized briefly for an infection and a suspected blood clot.
- Late 2025: Released her sixth studio album, Don’t Tease Me With A Good Time.
- January 2026: Ringing in the New Year with a "silver lining" outlook and a brand-new tour on the horizon.
From BRIT School Kid to 2026 Icon
To really get why her current age matters, you’ve gotta look at where she started. She was only 11 when she landed a role in the West End’s Whistle Down the Wind. By the time she was a teenager at the legendary BRIT School, she was classmates with Adele and Leona Lewis. Talk about a powerhouse graduation class.
She spent her early 20s writing hits for other people. Most people don’t realize she’s the pen behind Miley Cyrus's "Party in the U.S.A." That song basically paid her rent for years before "Do It Like a Dude" ever hit the airwaves.
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When she finally blew up globally with Who You Are in 2011, she was just 23. She spent her late 20s and early 30s as a coach on The Voice (UK and Australia) and even went over to China to compete in—and win—the massive singing competition Singer. She’s always been a workhorse. But 37 looks different on her. It looks like someone who has stopped trying to prove she can sing and started singing because she has something to say.
Motherhood and "Sky"
You can't talk about Jessie J's life right now without mentioning her son, Sky Safe Colman. After being told for years that she might never conceive naturally—and after the devastating heartbreak of a miscarriage in 2021—Sky was born in May 2023.
He is basically the center of her universe. During her cancer battle in 2025, she was incredibly vocal about how her son was her "north star." On her new album, the track "I’ll Never Know Why" is a gut-punch of a song written for a late friend, but she’s performed it recently with a new sense of maternal gravity. She’s navigating being a "cool mom" while also being a survivor, and honestly, it’s making her music better than it’s ever been.
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What's Next for Jessie J in 2026?
She’s not slowing down. If anything, she’s speeding up. She has a massive UK and European acoustic tour kicking off in April 2026. This isn't going to be the pyrotechnics and "Bang Bang" choreography of 2014. It’s intended to be intimate, raw, and—let’s be real—probably a bit of a tear-jerker.
She’s also become a massive advocate for early detection. She’s gone on record saying, "If I get women to check their boobs and walk away from d***heads, my work is done." It's that classic Essex bluntness we love her for.
Why You Should Care
Jessie J is 37, a cancer survivor, a mum, and still possesses one of the best voices on the planet. If 2025 was the year of "shedding and letting go," 2026 is clearly her year of reclamation.
Actionable Insights for Fans:
- Check your health: Follow Jessie’s lead and do your self-exams. Early detection is why she’s here touring in 2026.
- Listen to the new record: Don’t Tease Me With A Good Time is her most cohesive work since 2011.
- Get tickets early: Her 2026 acoustic dates are smaller venues and are expected to sell out fast because of the "comeback" narrative.