Coronation Street actress Kimberly Hart-Simpson has surprised fans today with a spur-of-the-moment hair transformation, which has seen her swapping her trademark blonde lengths for a dark brown colour.The Welsh beauty, 33, took to Instagram to show followers her new look, but we doubt she was expecting quite such an overwhelming response. “Really suits you,” one fan gushes, while another notes that she looks “even more stunning” with brown hair.