Harry Potter star Miriam Margolyes and veteran British actress Barbara Windsor are backing a new breast cancer awareness campaign aimed at women over 70. The stars have thrown their support behind the Be Clear on Cancer initiative, which aims to inspire older women to maintain regular cancer checks. Margolyes, 72, says, "I have always had big boobs and I want to hang on to them. My advice - be vigilant and get checked out if you're concerned - it could save your breasts and your life." Windsor, 76, whose character in U.K. soap opera EastEnders was diagnosed with the disease in 1999, adds, "I met a lot of women affected by breast cancer then, which made me realise how important an early diagnosis is. You get to a certain age and think you're too old for some things, but breast cancer isn't one of them."