Hilton was born in New York City, New York, to Kathy (née Avanzino), a socialite and actress, and Richard Hilton, a businessman. She is the oldest of four children: she has one sister, Nicholai Olivia "Nicky" Hilton (b. 1983) and two brothers, Barron Nicholas Hilton II (b. 1989) and Conrad Hughes Hilton III (b. 1994). Hilton is of Norwegian, German, English, Irish, and Italian ancestry.[4] She is a niece of two child stars of the 1970s, Kim and Kyle Richards.