I bought these pants in May for my 12 year old son who was a size 12 at the time. We received pants that were tight and I sent them back. We had to go to a size 14 and they fit great, not much room left. Now August went to church to paint and couldn't fix it. Since I really like the cut and the material of the trousers, I order another pair and go back up to size 18! Hopefully they won't be too long. Pants are a bit small.