The singer, 37, who revealed her diagnosis last week , performed at Capital's Summertime Ball at Wembley Stadium over the weekend and vowed to 'beat' the disease as she addressed the crowd.
The self-confessed diva, 56, took to the iconic London stage alongside the likes of Rita Ora and Will Smith for what was her first UK show in a whopping six years.
The music legend, 56, was spotted leaving her London hotel this afternoon dressed in a figure-hugging playsuit that showed off her famous curves perfectly.
Jessie J put on a brave face as she arrived at Wembley Stadium for Capital's Summertime Ball 2025 on Sunday, just a week after sharing her breast cancer diagnosis with fans.