Paris Hilton Celebrates Son's First Birthday Paris Hilton rang in the birthday of her son Phoenix. The diva shared glimpses of the birthday celebrations on Instagram. Paris Hilton can be seen giving Princess vibes in an Elsa gown. She completed her look with open hair and a tiara. Phoenix looks super cute in a white shirt and beige pants. He also wore a cap. Phoenix can be seen having an animal themed birthday party. He had a fun time with lots of balloons and real animals. All Images: Paris Hilton/Instagram.