United Kingdom, June 16 -- Jessie J vowed to "beat" breast cancer in an emotional speech at her final show before she undergoes surgery.

The 37-year-old pop star went public with her breast cancer diagnosis earlier this month revealing she is battling an "early" form of the disease and is scheduled to have an operation later in the year - and she used her performance at Capital's Summertime Ball with Barclaycard at London's Wembley Stadium on Sunday night (15.06.25) to tell fans she's planning to overcome her health issues.

She told the audience: "I've always been an open book. Today, this show is my last show before I go to beat breast cancer.

"So it's so special to me you have no idea. I feel so proud to be from the UK, to be an hone...