I wondered what age you would consider acceptable for the oldest sibling to babysit the younger? I have a 14 year old and a 7 year old. I was about to book a friend's daughter for babysitting for an evening out and then it occurred to me her daughters are not much older than my eldest (her DDs are 15 and 18 so if we booked the youngest she would be one year older than my eldest). I wonder if friend's DD and my eldest DC would feel rather silly in the situation. Would you leave a 7 year old with a 14 year old sibling for an evening out or is it too young?