Actress Valerie Harper is set to put her terminal cancer battle to one side to compete on U.S. reality competition show Dancing With The Stars, according to reports. The Mary Tyler Moore Show star, who turned 74 last week (22Mar13), was diagnosed with leptomeningeal carcinomatosis, in March (13) and given just three months to live, but she is reportedly doing well and has signed on to compete on the popular TV show. According to TMZ.com, Harper has been practising with her dancing partner Tristan MacManus and can't wait to continue her health battle on the dancefloor. Other contestants rumoured to be joining the show include reality star Nicole 'Snooki' Polizzi, actress Elizabeth Berkley, Glee star Amber Riley and singer Christina Milian. Leah Remini, who hit the headlines when she quit the Church of Scientology earlier this summer (13), is also among those who will be dancing for the show's coveted mirrorball trophy on season 17.