Cheryl and Nadine Coyle left fans feeling emotional as they shared a sweet moment on stage while kicking off the Girls Aloud reunion tour this weekend, with the pair joining Kimberley Walsh and Nicola Roberts to perform in Dublin.The band returned to the stage for the first time in 11 years for the first night of the tour, and paid tribute to their late bandmate Sarah Harding, who passed away from breast cancer in 2021, during the show. During the show, Sarah could be seen singing on screen in old footage, as her voice was heard singing their iconic hit The Promise.The four singers turned their backs to the audience to look up at the screen showing Sarah. And upon turning back to finish the song together, Nadine, 38, appeared emotional, with Cheryl, 40, touching her back in a show of support.