Okay, Carson is 2 years, 5 months old and because of his length, he is wearing 24 months. But because of his weight, he still fits in 18 months. So unless I want his shorts to be short and his jeans to look like he is ready for a flood, I have to go big. I rolled his waist up but still had problems. There were some girls warming up behind us and every time he lost his pants, the girls would all laugh and tell him that they see his elmo butt (the diaper). Carson could have come home with lots of phone numbers if I would have let him. He was actually enjoying losing his shorts.