Son to model Stephanie Seymour and mogul Peter M. Brant. Like his brother Peter Brant II, he was a socialite and model prominent in New York City. He was found dead from an apparent drug overdose in January 2021.
He posted his first ever Tweet to his brantharry account on November 25, 2011.
He modeled with The Lions, a boutique modeling agency in New York City.
He grew up in Greenwich, Connecticut with his brother Peter and his sister Lily Margaret. He was raised with a half-brother, Dylan, from his mother's previous marriage. He also had five half-siblings from his father's previous marriage.
Both he and Victoria's Secret model Sara Sampaio were members of The Lions NY modeling agency.