Heartbreaking reason Girls Aloud reunited for ITV special

Cheryl and Kimberley Walsh lead stars including Nicola Roberts and Nadine Coyle

Girls Aloud have reunited for a one-off ITV special to raise money for The Brain Tumour Charity after their bandmate Sarah Harding died of breast cancer last year.

Cheryl , Kimberley Walsh, Nicola Roberts and Nadine Coyle will appear in the show, titled Girls Aloud: One Night In London, on October 13.

The special will see the group perform some of their biggest hits including Sound Of The Underground and Biology and will also include unseen footage of the band from their early days in 2002.

Cheryl shared a photo of herself with her bandmates on social media, writing: "We are so excited to announce that we will be reuniting for a one-off special to raise money for The Brain Tumour Charity."

She added: "Sarah was such a huge part of our lives and we know she would have wanted us to do something to help other people affected by this terrible disease."

The girls will be joined by a host of special guests on the show, including Alesha Dixon, Olly Murs and Rylan Clark.

Tickets for the show go on sale on Friday, September 23.