The English pop singer Jessie J says she has been diagnosed with breast cancer and will undergo surgery after her performance at the London music festival Capital's Summertime Ball next weekend.

Jessie J, 37, shared the news in an Instagram video on Wednesday. "I was diagnosed with early breast cancer," she said in the clip. "Cancer sucks in any form, but I'm holding onto the word 'early.'

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"It's a very dramatic way to get a boob job. I am going to disappear for a bit after Summertime Ball to have my surgery, and I will come back with massive (expletive) and more music."

The annual Summertime Ball will be held at Wembley Stadium on Sunday, June 15.

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