May 2, 2015: Princess Charlotte is born It's a girl! Will and Kate named their little one Charlotte Elizabeth Diana, a touching tribute to her great grandmother, Queen Elizabeth, and her late grandmother, Princess Diana. This bundle of joy is known as Princess Charlotte of Cambridge and was also born at St. Mary's Hospital like her brother. The palace shared an adorable photo of her and big brother, George to celebrate the occasion. Image Source: Getty / Max Mumby/Indigo