Sarah Harding died in 2021 after fighting cancer.
The group went to number one in 2002.
The Girls Aloud singer will play Jenny beginning in January.
Harding was diagnosed with cancer just before Walsh found out she was expecting another child.
Bandmate Sarah Harding died of breast cancer last year.
The remaining four women are raising money in Sarah Harding's memory.
Harding died of breast cancer last year.
Sarah Harding died of breast cancer last year, at the age of 39.
Louis Walsh has hit out at today's talent shows, saying they are 'boring' because judges can no longer be honest.
Louis Walsh says girls in bands 'don't like each other' because they are always competing to be the 'lead girl' and want to 'be the skinniest'.
Kimberley Walsh says Sarah Harding agreed to a Girls Aloud reunion before she died.
Sarah Harding's death is still taking an emotional toll on her bandmate Nicola Roberts.
The former Girls Aloud singer was found to have committed 'straightforward profit extraction'.
John Hardman said he misses Sarah 'greatly'.
Girls Aloud star Harding died in September.
Nadine says Girls Aloud could be back as a four-piece for their 20th anniversary next year.
The singer said she still gets laughed at for the drama now.
The singer said she's 'not emotionally, mentally or physically able to perform' this weekend.
The singer topped the charts with 'Wear It Like A Crown' and funds will go to The Christie Foundation NHS hospital in Manchester.
The 39-year-old revealed last year that she had been diagnosed with breast cancer.
The Girls Aloud star has died aged 39 following a year-long battle with breast cancer.
The Girls Aloud star said she had met the Department of Culture, Media and Sport to discuss the bill.
The Girls Aloud star said the birth was an 'amazing experience'.
The 37-year-old has been keeping quiet and away from social media during lockdown.
Little Mix shared their Brit Awards Best British Group victory with girl bands who had been nominated before them.