When I was around 15 or 16, I was always told that I could pass for 21. Now, I'm 25, and I'm regularly told that I don't look a day older than 17. I was sitting in a doctors office the other day, and the nurse told me that she felt the need to double check my chart several times, as she felt there was no way that I was over 17. I asked her why, she commented that I just look so young. That sort of thing happens regularly.