Baldwin was born in Washington, D.C. She was crowned Miss New Mexico USA 1965 and was the second runner up to Sue Ann Downey in the Miss USA pageant that year. Her first acting job in Hollywood was in 1969 on I Dream of Jeannie in the episode "Jeannie and the Bachelor Party" playing Major Nelson's secretary Dolores.
Both Gingers also worked with Larry Hagman. Judith Baldwin played Major Nelson's secretary Dolores on a 1969 episode of I Dream of Jeannie, while Tina Louise played J.R.'s secretary Julie Grey on the first few episodes of Dallas before being killed off.