It is relatively easy to find clothes for “husky” kids (Probably due to the fact that kids are getting heavier right along with the rest of the American population.), but really hard to find pants that will fit a skinny kid. My youngest son is Rachel Zoe skinny and pants either fit in the waist and are to short, or they are long enough and he’s swimming in them. My go to source for pants that actually fit him is the Gap. He practically lives in the Flat Front Khakis. And he can actually wear a size 10 instead of a 7 is so short that he looks like he is waiting for a flood.
And if your boy is Husky, Gap has you covered too. In fact, it’s the exact same link. Prices start at $19.50.