Dorthea "Doris" Singleton (September 28, 1919 â€" June 26, 2012) was
an American actress, perhaps best remembered as Lucy Ricardo's
nemesis/frenemy, Carolyn Appleby, in I Love Lucy.Singleton, born in
New York City, trained as a ballerina, dancing for three seasons in
the mid-1930s with the newly formed "Ballet Theatre", later to become
the American Ballet Theatre. She began her career in show business as
a vocalist in the late 1930s with Art Jarrett's orchestra. Her
distinctive low, lyrical voice made her a favorite in the radio
industry.[citation needed]Singleton worked in New York during World
War II both as a guest star and in regular roles on numerous hit radio
shows, including The Whistler and The Alan Young Show, on which she
played Young's girlfriend, Betty Dittenfeffer. She played Ruth Henshaw
on the radio version of December Bride.:97 Doris Singleton Biography, NetWorth, Height, Age, Weight, Family, Married, Son, Daughter