Olympic gymnast Nastia Liukin was in no mood to have her legs called "gross chicken" ones today. The 31-year-old retired athlete and five-time Olympic medalist made it clear to her 1 million Instagram followers as she defended her champion body, with a throwback photo of her upside-down in gravity-defying splits coming as a clap-back to a troll. Nastia, followed by 1 million and in the news last year for an anorexia storm, showed who's boss. Check out the drama below.