Jessie J Smiles at Capital Summertime Ball After Cancer Announcement

Jessie J arrived at Wembley Stadium for Capital’s Summertime Ball 2025 on Sunday, just a week after sharing her breast cancer diagnosis with fans.

The singer, 37, flashed a beaming smile as she put on a brave face, wearing a black mini dress layered over a sheer black catsuit.

Adding height with black patent leather wedges, Jessie beamed for the cameras ahead of her highly anticipated performance.

Jessie is among a star-studded lineup taking to the stage at Capital’s Summertime Ball with Barclaycard, including Mariah Carey, Benson Boone, Will Smith & DJ Jazzy Jeff, Tate McRae, Myles Smith, Lola Young, Jade Thirlwall, and many more.

Jessie’s appearance at the Summertime Ball follows her emotional announcement last week about her breast cancer diagnosis.

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Jessie J arrived at Wembley Stadium for Capital’s Summertime Ball 2025 on Sunday, just a week after sharing her breast cancer diagnosis with fans

The singer, 37, flashed a beaming smile as she put on a brave face, wearing a black mini dress layered over a sheer black catsuit

The singer said that the condition had been caught ‘early’, telling her fans in an emotional video: ‘Cancer sucks in any form but I’m holding onto the word early.’

Jessie revealed that she discovered she had the illness before the release of her hit new single No Secrets, which was released on April 25.

The mother of one said she would be undergoing surgery after performing at the Summertime Ball in London.

No Secrets was Jessie’s comeback song after a four-year hiatus, during which time she welcomed her son Sky, two, with basketball star Chanan Colman.

In the clip, Jessie said: ‘Hi, I have been going back and forth a little bit on whether to share it. I want to but there’s lots of opinions outside…

‘Also knowing that I want to share with my fans and the people that care about me, also I’m a sharer. I’ve always shared everything that I go through in my life.

‘Before No Secrets came out, I was diagnosed with early breast cancer. Cancer sucks in any form but I’m holding onto the word early.

‘I have been in and out of tests throughout this whole period, adding that she had not been adequately ‘processing it because I’m working so hard.’

Adding height with black patent leather wedges, Jessie beamed for the cameras ahead of her highly anticipated performance

The Price Tag hitmaker further accessorised with statement earrings and styled her dark locks in a sleek bun

Jessie is among a star-studded lineup taking to the stage at Capital’s Summertime Ball with Barclaycard, including Mariah Carey , Benson Boone, Will Smith & DJ Jazzy Jeff, Tate McRae, Myles Smith, Lola Young, Jade Thirlwall , and many more

Jessie, whose Christian name is Jessica Cornish, also disclosed that she will undergo surgery later this summer.

As she battles breast cancer, Jessie has continued to energetically promote No Secrets, the lead single for her upcoming sixth studio album.

Last month she performed at the BAFTA Television Awards in London, making her grand return to the stage to sing The Award Goes To.

Jessie said she ‘wanted to be open and share it – one, because selfishly I do not talk about it enough. I’m not processing it ’cause I’m working so hard.’

She added: ‘I also know how much sharing in the past has helped me, with other people giving me their love and support and also their own stories.’

The London native stated: ‘I’m an open book. It breaks my heart that so many people are going through so much, similar and worse. That’s the bit that kills me.’

Meanwhile, Zara Larsson stunned in a unique bandeau dress with neon accents as she posed on the red carpet before taking the stage

TV presenter Sian Welby looked phenomenal in a silver metallic sequin party dress and sparkly silver boots which featured a slouchy fit

She was joined on the red carpet by her Capital Breakfast co-hosts Jordan North and Chris Stark

Meanwhile, radio presenter Sonny Jay cut a smart casual figure in a white polo shirt and black jeans

Will Smith (left) also looked in great spirits as he posed up a storm backstage with DJ Jazzy Jeff (right)

Reneé Rapp layered up in a vibrant green jacket with yellow panels and a blue checked midi skirt as she posed on the carpet

Meanwhile, former Little Mix star Jade Thirlwall looked incredible in a semi-sheer crocodile print mini dress

‘I just wanted to let you guys know it wasn’t something I planned. I’m getting to keep my nipples. That’s good, it’s a weird topic and a weird situation.’

Jessie reflected: ‘To get diagnosed with this as I’m putting out a song called No Secrets, right before a song called Living My Best Life – which was all pre-planned, before I found out about this. I mean, you can’t make it up.’

She joked: ‘It’s a very dramatic way to get a boob job,’ adding that the operation to excise the cancer would occur sometime after her appearance at Summertime Ball at London’s Wembley Stadium.

Jessie told fans she would ‘disappear for a bit after Summertime Ball to have my surgery and I will come back with massive t**s and more music.’

Continuing the lighthearted mood, she wrote in the caption: ‘No (more) Secrets and is it too soon to do a remix called Living My Breast Life?

‘All jokes aside (you know it’s one of the ways I get through hard times). This last two months have been so amazing, and having this go on alongside it on the sideline’s has given me the most incredible perspective.

‘BUT… your girl needs a hug. Also not getting massive t**s. Or am I? No no.. I must stop joking?’

Later reflecting on her news, Jessie wrote on her Instagram Story: ‘Just shared (posted) something super personal I have been holding onto for 9 weeks.

Jessie’s appearance at the Summertime Ball follows her emotional announcement last week about her breast cancer diagnosis

The singer said that the condition had been caught ‘early’, telling her fans in an emotional video: ‘Cancer sucks in any form but I’m holding onto the word early’

‘The timing of it has been mad but beautiful and given me this incredible perspective in this time. But honestly I need to process it and, I need a hug.

‘You have loved me through all my good and hard times. I don’t want this to be any different.’

Jessie’s celeb friends flooded her Instagram post with supportive comments and well wishes with Rita Ora writing: ‘Your literally my favourite person and I’m praying for you you’ve got this. my mother had it and I know the surgery and any treatment on this matter is mentally tough so I’m here for you. X’

Singer Paloma Faith commented: ‘Sending so much love I have every confidence you will beat this’

JLS star Marvin Humes added: ‘Ain’t no one stronger than you..you know you’ve got this..’ whilst his wife, Saturdays star Rochelle posted: ‘We love you so much.’

Strictly Come Dancing star Amy Dowden, who has fought her own breast cancer battle, said she was ‘sending so much love and strength.’

Scott Mills also paid tribute to the pop star on his Radio 2 Breakfast Show on Wednesday morning, after it was announced that Jessie is playing at Radio 2 in the Park in Chelmsford in September.

‘Jessie, just to say, we’re sending all the Radio 2 love your way,’ Scott said on air. ‘Sending so much love to you and your family and we will see you in Chelmsford.’

Breast cancer is one of the most common cancers in the world and affects more than two MILLION women a year

Breast cancer is one of the most common cancers in the world. Each year in the UK there are more than 55,000 new cases, and the disease claims the lives of 11,500 women. In the US, it strikes 266,000 each year and kills 40,000. But what causes it and how can it be treated?

What is breast cancer?

It comes from a cancerous cell which develops in the lining of a duct or lobule in one of the breasts.

When the breast cancer has spread into surrounding tissue it is called ‘invasive’. Some people are diagnosed with ‘carcinoma in situ’, where no cancer cells have grown beyond the duct or lobule.

Most cases develop in those over the age of 50 but younger women are sometimes affected. Breast cancer can develop in men, though this is rare.

Staging indicates how big the cancer is and whether it has spread. Stage 1 is the earliest stage and stage 4 means the cancer has spread to another part of the body.

The cancerous cells are graded from low, which means a slow growth, to high, which is fast-growing. High-grade cancers are more likely to come back after they have first been treated.

What causes breast cancer?

A cancerous tumour starts from one abnormal cell. The exact reason why a cell becomes cancerous is unclear. It is thought that something damages or alters certain genes in the cell. This makes the cell abnormal and multiply ‘out of control’.

Although breast cancer can develop for no apparent reason, there are some risk factors that can increase the chance, such as genetics.

What are the symptoms of breast cancer?

The usual first symptom is a painless lump in the breast, although most are not cancerous and are fluid filled cysts, which are benign.

The first place that breast cancer usually spreads to is the lymph nodes in the armpit. If this occurs you will develop a swelling or lump in an armpit.

How is breast cancer diagnosed?

Initial assessment: A doctor examines the breasts and armpits. They may do tests such as a mammography, a special x-ray of the breast tissue which can indicate the possibility of tumours.
Biopsy: A biopsy is when a small sample of tissue is removed from a part of the body. The sample is then examined under a microscope to look for abnormal cells. The sample can confirm or rule out cancer.

If you are confirmed to have breast cancer, further tests may be needed to assess if it has spread. For example, blood tests, an ultrasound scan of the liver or a chest X-ray.

How is breast cancer treated?

Treatment options which may be considered include surgery, chemotherapy, radiotherapy and hormone treatment. Often a combination of two or more of these treatments are used.

Surgery: Breast-conserving surgery or the removal of the affected breast depending on the size of the tumour.
Radiotherapy: A treatment which uses high energy beams of radiation focused on cancerous tissue. This kills cancer cells, or stops them from multiplying. It is mainly used in addition to surgery.
Chemotherapy: A treatment of cancer by using anti-cancer drugs which kill cancer cells, or stop them from multiplying.
Hormone treatments: Some types of breast cancer are affected by the ‘female’ hormone oestrogen, which can stimulate the cancer cells to divide and multiply. Treatments which reduce the level of these hormones, or prevent them from working, are commonly used in people with breast cancer.

How successful is treatment?

The outlook is best in those who are diagnosed when the cancer is still small, and has not spread. Surgical removal of a tumour in an early stage may then give a good chance of cure.

The routine mammography offered to women between the ages of 50 and 71 means more breast cancers are being diagnosed and treated at an early stage.

For more information visit breastcancernow.org or call its free helpline on 0808 800 6000