My girls are 10 and almost thirteen. When they get along, they get along great, but there is so much competition. The youngest won a writing contest, the oldest plans to be a writer. The youngest hates reading, the oldest got second place in a class read-a-ton. The youngest is an amazing gymnast, the oldest is a talented dancer. They are like sugar and spice. The oldest is very go-with-the-flow and doesn't care but is also pretty sensitive and doesn't like change while the youngest gets mad quickly. She has very harsh boundaries and is very dramatic but is less shy and says what's she's thinking, she doesn't try to please others. As they get older they test each other a lot more.