Peter was born in New York City. His father, Alwin Michaelsen, is a financial consultant, and his mother, Gail, was once Alwin's secretary. She is the niece of Stork Club owner Sherman Billingsley, and the cousin of G… See more

Billingsley's first acting role was when he was 2 in a 1973 Geritol commercial. He went on to star in about 120 television advertisements throughout the 1970s and early 1980s. At 12 he was quoted as saying, "Aft… See more