Olympic gymnast Aly Raisman is taking a brief moment to thank her fans around the world for the support over the years and also recognizing the anniversary of one of her biggest accomplishments with an adorable throwback photo to commemorate the occasion. The 26-year-old gold-medal gymnastics star took to Instagram on Friday afternoon and treated her 2.1 million followers to a special thank you note while celebrating the 3rd anniversary of her bestselling memoir, "Fierce: How Competing for Myself Changed Everything."