"There's something wrong with my pants."

I've posted before about how I have had a hard time finding pants that fit Enoch. Really - this kid is just plain skinny.
This morning I was in the bathroom doing Kate's hair and I heard Enoch yell from his room, "There's something wrong with my pants." I thought he's put a hole in the knees of yet another pair of jeans. He walked into the bathroom and I burst out laughing. He was wearing Kate's jeans! And they were buttoned and zipped up!

What am I going to do with this kid. He's my best eater. He actually eats quite a bit for a six year old. But, he is very, very, very active and has an extremely high metabolism. I'm sure he is burning off all his calories by lifting his fork to his mouth (like his dad). Chances are, he will always be skinny and his pants will never fit quite right (like his dad).