My ds is 2.6, and I have real difficulty finding trousers to fit! Summer is fine, as he is in shorts most of the time, but when it comes to long trousers, it's a nightmare. He's not especially thin, just a 'normal' size, but all the trousers are huge around the waist, and the legs are so baggy! Not that I want him in skinny jeans or anything, but just a nice fitting pair. If I get a smaller size, they are too short. I do have some with adjustable waists, but they can be uncomfortable when they are all ruched at the back.
Do they only make clothes for all these obese children we keep hearing so much about?!