Dia Mirza on Saturday penned a heartfelt note as she celebrated her son Avyaan Azaad’s first birthday. The actress who welcomed the little one with her husband Vaibhav Rekhi also dropped a monochrome picture and shared how he had to undergo¬†2 life-saving surgeries after being¬†born 3 months premature. Dia called him a ‘warrior’ and thanked the medical staff and the doctors who looked after Avyaan during his treatments.