Coleman, Maureen (19 March 2021). "I was Calum Best's shoulder to cry on when his dad died: Sarah Harding". Belfast Telegraph . Retrieved 28 March 2021. Girls Aloud star Sarah Harding dies aged 39". BBC News. 5 September 2021 . Retrieved 5 September 2021. Harding revealed in August last year that she had been diagnosed with breast cancer. She said she was undergoing weekly chemotherapy sessions and doing her best to fight the disease.

Caulfield, Keith (21 March 2013). "Girls Aloud: A Whole Lotta Chart History". Billboard. Prometheus Global Media . Retrieved 21 March 2013. Sarah Harding dies: Nadine Coyle, Nicola Roberts and Geri Horner among stars paying tribute to singer". Sky News. 5 September 2021. Proceeds from Sarah Harding's last single to fund cancer research". The Guardian. 7 September 2021. On 18 March 2021, Harding released a memoir, Hear Me Out, documenting her life and career as well as her cancer diagnosis. [46]Sarah Harding's mum says her daughter's final wish was to be remembered not for her terrible disease but just as she was. Mum Marie added in her last days pop queen Sarah was comforted knowing she was loved by fans and family. In a tender message, she said: "Many of you will know of Sarah’s battle with cancer and that she fought so strongly from her diagnosis until her last day. She slipped away peacefully this morning. I’d like to thank everyone for their kind support over the past year.

Harding first revealed that she was working on her debut album in March 2010. [32] She named Lady Gaga as her biggest influence. [33] Despite this, an album never materialised. Harding restated her plans to release a solo album in 2013 and said that she had been "writing and experimenting with different sounds in the studio." [34] [35] [36] In an interview in 2014. She said, "I'm doing all sorts of stuff at the moment [...] A lot of it is music, music, music.". [37] In July 2015 her first solo release, "Threads", was announced; it was released on 7 August. [38] [39] Girls Aloud's Sarah Harding: She dreamed of making it as a singer and now she's making the most of life at the top". Daily Mirror. UK. 22 April 2009 . Retrieved 5 August 2011. The group's debut single " Sound of the Underground" peaked at number one on the UK Singles Chart, becoming the 2002 Christmas number one. [12] Girls Aloud hold the record for the shortest time between formation and reaching number one. [13] The group released their debut album Sound of the Underground in May 2003, [14] which entered the charts at number two and was certified platinum by the British Phonographic Industry (BPI) later the same year. Their singles " I'll Stand by You", " Walk This Way" and " The Promise" have charted at number one. Two of their albums have reached the top of the UK Albums Chart: their greatest hits album The Sound of Girls Aloud and 2008's Out of Control, both of which entered the chart at number one, with over one million copies of the former being sold. [15]Sarah Harding 'Moves In With Her Mum' As She Undergoes Breast Cancer Treatment". Capital. 9 October 2020. Sarah Harding claims injury after fight with boyfriend". The Independent. 3 January 2012 . Retrieved 3 September 2020. Beaumont-Thomas, Ben (26 August 2020). "Girls Aloud singer Sarah Harding receiving chemotherapy for cancer". The Guardian . Retrieved 3 September 2020.