More to explore:
The Dolly Sisters
The Sisters G (Eleanor and Karla Gutchrlein) in The King of Jazz (1930).
That Teasing Twosome ~ Eleanor Gutchrlein and Karla Gutchrlein, aka The Sisters “G” * were a Dutch sister dance team in the 1920s and early 1930s. They appeared in a few movies and were most notable for their striking black bobs.