Chaplin, Wallace Worsley, and Elliott Dexter, c.1921

I believe this was taken on the set of Worsley's film Grand Larceny. The leading lady in the film was Claire Windsor, whom Chaplin was dating around this time. In My Autobiography, Chaplin recalled that when he first met Mildred Harris she had a crush on Elliott Dexter.

Note Charlie's non-button-up shoes.