Born on March 13, 1959, as Kathleen Elizabeth Hilton (formerly Avanzino), she is an American socialite, fashion designer, actress, and television personality. She is the mother of socialite Paris Hilton, fashion designer Nicky Hilton, and half-sister of Kim Richards and Kyle Richards from The Real Housewives of Beverly Hills. Hilton also appeared in that series from 2021 to 2022.
Hilton is the child of Larry Avanzino and Kathleen Mary (née Dugan). Her mother’s family is Irish, while her father’s family has Italian origin. After the divorce of Hilton’s parents, her mother wed Kenneth E. Richards (1917–1998), who had two of Hilton’s maternal half-sisters, Kim and Kyle Richards, and three other adult children from a previous marriage. As a result of her father’s second marriage, Hilton also has five paternal half-siblings. She received her diploma from Montclair College Preparatory School in Los Angeles, where she made Michael Jackson her closest friend. They continued to be close until his passing in 2009.