Princess Bajrakitiyabha Narendiradebyavati, the eldest daughter of King Maha Vajiralongkorn, was a lawyer, diplomat and former ambassador who played a prominent role in public service and legal reform in Thailand. Thailand has entered a period of mourning following the announcement that Her Royal Highness Princess Bajrakitiyabha Narendiradebyavati, passsed away on 11 June at the age of 47 after spending nearly four years in hospital following a collapse in December 2022.