Kimberley Walsh has said that grieving for Sarah Harding has been a “daily challenge” since her former Girls Aloud bandmate died from breast cancer three months ago. Sarah was just 39 years old when she passed away on 5 September, leaving Kimberley struggling to deal with accepting her no longer being around – particularly after she spent quality time with her three sons, Bobby, 7, Cole, 5, and baby Nate.