Girls Aloud have opened up on the pain of reuniting without late bandmate Sarah Harding, two years on from her death - admitting they miss "everything" about her. Cheryl, Nicola Roberts, Kimberley Walsh and Nadine Coyle have confirmed that the rumours of them reuniting are true, but told Heart FM that being a four-piece band is taking some getting used to as they grieve the loss of Sarah.