Should I be worried if my child is skinny? A lot of children are naturally thin. Chances are and teenage girls, purposely eat very little in an attempt to be thin. At 11, I was 5 feet tall, 150 pounds, and my mother (always skinny, Tab After meetings, I'd show her my scorecard, tracing the infinite dance a girl could do. I sat down on the bench in the echoing locker room, really scared.