Christopher was born into a middle-class family. Her father was a newspaper editor and her mother a librarian. She was educated at New Rochelle High School from which she graduated in 1944. She began her career as a pin-up model and was so successful that she received the title of "Miss Photo Flash 1945". Following this success she received a film contract with RKO Radio Pictures and made her screen debut in the uncredited role of a bridesmaid to Laraine Day in The Locket (1946).

She then had the lead role of Tess Trueheart in Dick Tracy's Dilemma (1947), opposite Ralph Byrd. She later had turns in such motion pictures asDesperate (1947), I Cheated the Law (1949), If You Knew Susie (1949), Code of The Silver Sage (1950), and Gasoline Alley (1951). She also made TV appearances on such programs as Lux Video Theatre and had a recurring role on Doctor I.Q. in the mid-1950s. She retired from acting and modeling in 1954 to focus on her marriage to Donald Griffin although she did come out of retirement once in 1958 for an appearance on The Perry Como Show.

In the mid-1970s she was diagnosed with diabetes and died from complications of the disease on June 18, 2012. She was survived by her husband and three children. She was interred at Williamsburg Memorial Park in Williamsburg, Virginia.

Source: Wikipedia