Aoki was born in New York grew up in California and London, attending high school at The American School in London. Her Japanese father, the late Hiroaki Aoki A.k.a Rocky Aoki (1938–2008), a former Olympic wrestler, was the founder and owner of the Benihana restaurant chain until his death on July 10, 2008. Her mother, Pamela Hilburger, is a jewelry designer of German and English heritage.
Aoki was discovered in New York at a Rancid concert she had gatecrashed. She started modeling when she was 13, the same year Aoki was introduced by her godmother to Kate Moss, who would later take the young model under her wing. She was signed to Storm Model Management at age 14. In 1998, at the age of 16, Aoki replaced Naomi Campbell as the face of Versace.
Aoki lives on her own in Los Angeles, and keeps her personal life private. She is interested in writing poetry, playing the drums and hanging out with her two pet snakes. Her half-brother, Steve Aoki, is a Los Angeles DJ and the founder of Dim Mak Records. Aoki also has three sisters—Ellie, Grace, and Echo—and three other brothers—Kyle, Kevin, and Cole Price.
Sean and Seng graduated in Fashion Photography from the University of the Arts London in 2004. They currently reside in London, working for clients such as POP, Dazed and Confused, Vivienne Westwood, Fred Perry, Lane Crawford and Preen.