They Seem Like Normal 1940’s Dancers. But What Happens At Minute 1:17 Is NOT NORMAL… WHOA!!

You are about to see something quite incredible. These three girls are called the Ross Sisters. Aggie, Maggie and Elmira might seem quite ordinary for the 1940s: great singers and very pretty but not much else. The reality is that they have an incredible secret talent. The first minute or so is quite unremarkable, but what happens after the first minute will surely surprise you. [googlead] I will not spoil the surprise for you but make sure to watch past the first minute and let us know what you think.