Logan was a little squirt at 1 year old too, relatively speaking. He has filled out SO MUCH the last two months. His butt and shoulder muscles are hard as a rock even when he's just standing. He doesn't show it well (to me) because he has so much more hair than Gavroche.
Gavroche has really muscled up nicely again the last two months, too. He was kind of flabby from getting fat and then losing all the weight, but now he's perfect and muscle-y. I need to get new pictures of them both, but all I can do for the moment in camera phone, and it's took dark for that right now. Maybe tomorrow