Coleen Nolan broke down in tears as she discussed her sister Linda's brain cancer diagnosis on Monday's Loose Women. Earlier on Monday, Linda Nolan revealed that her cancer has spread to her brain in a devastating health update on Good Morning Britain.The star, who found fame as one fifth of The Nolans – one of the most successful girl groups of all time, selling over 30 million records worldwide – first learned she had breast cancer in 2006. Her devastating diagnosis came six years after her older sister Anne’s and four years before sister Bernie’s.