The Jauregui Twins.

Faith and Lottie are 9 year old twins. Their family is the Jaureguis. The problem is, is that they don't get along with their older sister Lauren. Yes, Lauren Jauregui from fifth harmony. The twins are selectively mute, and they only talk to people they trust, mainly each other. So what happens when the two are forced to go on tour with Lauren and the other girls?
Will they open up?
Or will they get worse...