Jessie J has a 'one in two chance' of her cancer returning Pop star Jessie J has admitted she has a "one in two chance" of her cancer returning. 11 August 2025 Jessie J has a "one in two chance" of her cancer returning. Jessie J has opened up about her cancer battle The 37-year-old pop star underwent surgery for early-stage breast cancer in June and doctors told the singer they had managed to remove all of the abnormal cells, but Jessie will need regular monitoring in the future because there's a good chance the disease could return.