Hi, my grandchild is now 5 1/2 yr. she has not gained weight in a yr. still at 30lbs. and 37in tall, she wears size 3T pants, 4T tops. True both parents are small in stature, mom 5"4, 125lbs, dad 5"6 155lbs. They have a son 8yr. who is 50% on growth chart, younger sister is 3% to 5% on chart. She never wants to eat anything and is very thin, they try to punish her or bribe her into eating, they even waitted to enroll her in Kintergarden, because of her size.