Kylie Minogue wants women to know they don’t have to constantly overstretch themselves to try and be the “best’. The 55-year-old ‘I Should be so Lucky’ singer – who was handed the Global Icon award at this year’s Brit Awards in London and the icon gong at this week’s Billboard Women in Music Awards – has spent years at the top of the charts, and says she has now reflected on her life and doesn’t want females to overstretch themselves in pursuit of perfection. She told People on the red carpet at the Billboard awards about the biggest piece of advice she has for women: “There’s one of you.” Kyl…