Miles is the second oldest of Lionel's three children, who also include 20-year-old Sofia Richie and 37-year-old Nicole Richie. His mother is Lionel's ex-wife Diane Alexander.
A rising model in the industry who is signed to leading agency Wilhelmina, Miles made his runway debut at Philipp Plein's New York Fashion Week show this time last year.
He has not commented publicly on the alleged incident