Christian Oliver Brown {5} and Tiana Marie Brown {2} are the younger siblings of Aria. Chris is a happy child who loves to run around and play games with his friends. He doesn't really understand that Aria is having a baby, but he keeps asking questions about why her tummy is so big, and gets cross when she shouts at him. Tia is a curious girl, and she loves getting into things. She investigates everything, and her parents have to keep child locks on the cupboards so that she doesn't take things out of them.