....or should I be watching her diet a bit more?
I am really clueless about all of this. It seems like suddenly dd1 is almost 11 and needing a bra and just looking....different. She always had a slim but athletic build, average height, likes her food and is pretty active. In the last year she has gone from slim to quite bulky-looking, although you still wouldn't consider she was fat, I don't think. Her shape has changed as expected but she also seems to be laying down fat around the middle and her tummy sticks out now.
She eats a healthy diet, mostly home-cooked meals with the odd less healthy thing. She is in a swimming club and running club and swims and runs twice a week each for an hour at a time.
Is this normal?