In 1975 in Los Angeles, Fiddis married Canadian actor and comedian Tommy Chong, becoming his second wife. They adopted Marcus Wyatt (b. 1967) in 1978. They have three additional children together: Paris (b. 1974), Gilbran (b. 1981), and Precious (b. 1989). Shelby Chong is the stepmother to Tommy's two daughters from his first marriage, Rae Dawn and Robbi.