She is Gilda Gray’s understudy from the Follies
Gilda Gray was a Polish actress and dancer who came to the U.S. and became popular for dancing the “shimmy”
The Follies were a series of Broadway productions from 1907-1931. They were a type of Vaudeville show, where many different types unrelated acts are combined into a single show. The Follies in particular were known for their beautiful dancing women, such as Gilda Gray.
Gilda Gray was one of many immigrants at this time that worked on the Broadway/Hollywood scene, and is a shining example of the American Dream, the idea that a person can immigrate to America and become successful.
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