
Stevens, born Gloria Wood, was born in Los Angeles, California, the daughter of film producer and director Sam Wood. She made her first film appearance when she was just two years old in her father's second silent film, Peck's Bad Boy.
As an adult, she changed her name to K. T. Stevens to distance herself from her father's fame. She initially called herself Katherine Stevens, which people often shorted to "Katie," leading to the final version with the initials "K.T."
Stevens appeared in a number of films in the 1940s and 1950s, including Kitty Foyle, (directed by her father) with Ginger Rogers, The Great Man's Lady with Barbara Stanwyck, Address Unknown, Port of New York with Yul Brynner, Harriet Craig with Joan Crawford and Vice Squad with Edward G. Robinson. She also appeared as Phyllis in the 1969 hit movie Bob & Carol & Ted & Alice. Her last film role before her death from lung cancer was in the 1994 Whoopi Goldberg film Corrina, Corrina.

Corrina, Corrina
1994 · as Mrs. Morgan

Bob & Carol & Ted & Alice
1969 · as Phyllis

Kitty Foyle
1940 · as Molly

They're Playing with Fire
1984 · as Lillian Stevens

Pets
1973 · as Mrs. Daubrey

Vice Squad
1953 · as Ginny

Jungle Hell
1956 · as Dr. Pamela Ames

Peck's Bad Boy
1921 · as Henry's Sweetheart

Port of New York
1949 · as Toni Cardell

The Great Man's Lady
1941 · as Girl Biographer

Tumbleweed
1953 · as Louella Buckley

Harriet Craig
1950 · as Clare Raymond

Missile to the Moon
1958 · as The Lido

Address Unknown
1944 · as Griselle Eisenstein

Don't Tell Everything
1921 · as Cullen's niece