Cheryl said Girls Aloud have fulfilled their final promise to late bandmate Sarah Harding following a fundraising ball at the weekend in her memory.
The Primrose Ball took place at The Londoner hotel in the capital on Saturday night and raised thousands for vital cancer research.
Sarah tragically died from breast cancer in September 2021, aged just 39.
Taking to Instagram to thank people for their support, Cheryl said: “After an intensely emotional (& quite stressful) year of planning & organisation we managed to fulfil our last promise to Sarah.
“None of us can fight this awful disease by ourselves, but by coming together, leaning on each other and fighting side by side, we can surely try.”
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She continued: “We are deeply grateful and touched by each person that helped in our endeavour and are incredibly proud to say we have reached our target goal, making us able to fund the entire [cancer] study!! and also help in other ways for those currently suffering through harsh treatments.
“To our host Fearne Cotton and special guest performers Ricky Wilson, Will Young and Olly Alexander, you have no idea how much weight you lifted off our shoulders and how much light & warmth you brought into that room.
“I will forever be grateful for your time & generosity.”
Cheryl added: “Every single attendee & person that contributed in any way, no matter how big or small THANKYOU! You have literally helped in the fight to change the lives of others!”
Speaking about the Girls Aloud collaboration with Primark, which will also raise money for cancer charities, she said: “Our PJs are also flying off the shelves.
“Which means the people still suffering can be helped in Sarah’s honour too – the more we raise, the more we can do help others with breast cancer.
“I am blown away that even in these current times & circumstances people are still willing to think of how to support others in this continuous fight. We’ll get there. One step at a time.”
In an earlier Instagram post, Cheryl explained in more detail the promise the Girls Aloud members had made to Sarah before she died as she posted about the group's new clothing collection with Primark in memory of their beloved bandmate.
She said: “Before Sarah passed away, we promised her we would fulfil her wish of raising money for vital research to help determine young women between the ages of 29 and 40 who could be at risk of breast cancer with no genetic history.”
The Primark collection and fundraising in Sarah’s memory coincides with Breast Cancer Awareness Month, which is held every October.
All money raised will be split between Cancer Research UK and The Christie Charitable Trust.
Although Girls Aloud reunited for the event – with Cheryl, Nadine Coyle, Kimberley Walsh and Nicola Roberts all in attendance - they didn’t perform as a group as it “didn’t feel right” without Sarah.
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