Jeans will become looser and looser, because jeans are twill, and the knitting will become looser after wearing for a long time. If you touch the fabric, you will find that the jeans you often wear will gradually become thinner! If you think your jeans are getting bigger and you want them to shrink a little, you can put them in the dryer for a few minutes after washing, which can generally shrink by 3%. Jeans will be loose (even if they are not washed). Buy jeans that fit, and the buttons will be buttoned until they are just right! You'd better apply slimming cream to him.