Girls Aloud star Sarah Harding today delivered the devastating news that she's been diagnosed with breast cancer. After almost two years out of the spotlight, the 38-year-old singer returned to social media to share her heartbreaking diagnosis, telling fans she's undergoing chemotherapy and 'fighting as hard as I possibly can'. "There’s no easy way to say this and actually it doesn’t even feel real writing this, but here goes," she wrote. "Earlier this year I was diagnosed with breast cancer and a couple of weeks ago I received the devastating news that the cancer has advanced to other parts of my body. "I’m currently undergoing weekly chemotherapy sessions and I am fighting as hard as I possibly can. "I understand this might be shocking to