I'm doing a little different take on the challenge. Growing up for a long time our family had three girls. Then our parents decided to try for a boy. After three more tries and 3 more girls there were no more tries for a boy. Because there was such a big gap between the three older girls and the three younger girls, we thought of us like two different families. We became known as the BIG KIDS AND THE LITTLE KIDS. Even now, decades later, we still refer to us as the big kids and the little kids. Or the big girls and the little girls.