S.H.
My daughter is 27 months old, 22.5 lbs, and 34 inches tall. At just over 2 years old, she is just now making her way into 18-month clothes. I was concerned too and her doc said that as long as she is healthy and still growing, not to worry. She too has times when she won't eat anything at all. Then other days I can't fill her up. Instead of aiming for a balanced meal, he said to aim for a balanced week. She is very active and small for her age, but there is nothing wrong with her whatsoever.