Nadine Coyle hints at Girls Aloud reuniting to honour the death of Sarah Harding

Kimberley Walsh reflects on death of Sarah Harding on what would have been her 40th birthday

Kimberley Walsh pays tribute to late Girls Aloud co-star Sarah Harding on singer's 40th birthday

Cheryl leads tributes to late Girls Aloud bandmate Sarah Harding on 40th birthday