During the classes, a girl told her about auditions for chorus girls. The law required professional chorus girls to be at least 16 years old; although they were only 13, they decided to lie about their ages at the audition. It was a tap audition, and there were a lot of other talented girls there. The stage was covered except for a wooden apron at the front. When it was Ruby's turn to dance, she asked the dance director, Julian Mitchell, if she could dance on the wooden part so that her taps could be heard. He did not answer, so she went ahead, walked up to the front of the stage, and started her routine. The director said "Who said you could dance up there?" She replied "I asked you!", and she got a job in George M. Cohan's "The Rise of Rosie O'Reilly" (1923), in which she made $45 per week.