Born Dorothy Day, Lester took her stage name from Janet Gaynor's character in A Star Is Born (1937).[3] The name change was suggested by Mervyn LeRoy and approved by David Selznick.[4] Alas, she never made the grade as a 'star' in her own right.[5]
Lester attended schools in Manhattan and originally planned to design clothes for a career.[6] She was a student of music and art, and she gained notability as a pianist. She became a model for artists and photographers, leading to her being named one of the "Twelve Most Photographed Girls in America".[3] She was "seen in hundreds of advertisements and on scores of magazine covers".[3]