I suppose it's because at Frost Valley we so love each other that we start to look alike

Okay. Take a room of people - let's say 100 in all. Now divide them into 5 teams. Each team consists of 20 members. Then ask each group of 20 to find two people - not related - who look alike. You would not think you'd get people who look as alike as the people in the two photos below. Holy cow.