Ds3 is 13 and according to the charts the last time he was weighed and measured, perfectly average weight for his height. He is 5ft 1in and I'm not sure what he weighs. He is quite slim though. He has adhd and autism.
Anyway, ds3 is ok for most clothes except for trousers. He needs age 10-11 for round the waist and age 12-13 for the length. School trousers are ok because he can wear a belt. He likes to wear jogging bottoms at home. He wears a mixture of different sizes, including slim fit but none of them fit perfectly, they are either too big round the waist or too short. I tried taking them in but ds said it made the trousers feel weird. So I've left it as it is. Ds3 is happy and comfortable.
Mil came round yesterday and sighed at ds3's trousers, which were admittedly more like cropped trousers but he was wearing long socks with them so he was warm enough and he was comfortable. I explained to Mil that ds3 is fine, that there are no trousers that are for children that are longer in the leg and smaller in the waist except maybe if he wore leggings but he wasn't impressed by that idea, understandably. Mil said that I was obviously incapable and told ds3 not to worry, that she would buy him some trousers that fit. Ds3 said he was fine with the trousers he had but now MIL thinks he is suffering in silence out of loyalty to his incompetent mother. And that was as well as her usual moaning about how dh is lazy because I put the bins out and how I'm lazy because dh cooked the dinner. And yes we have reduced contact but unfortunately we still see them sometimes.