Harlow was born on September 27, 1927 in Kansas City, Missouri. She studied at Miss Barstow's Finishing School for Girls in Kansas City. Harlow was married to Charles McGrew in 1927. They divorced in 1930. On July 2, 1932 she married Paul Bern. On September 5, 1932, Bern committed suicide. On September 13, 1933 she married Harold Rosson. They divorced on March 11, 1934. She had no children. She died at the age 26 from renal failure on June 7, 1937 in Los Angeles, California.