Jeans Too Big Belt Loop Hack. Read the full post to learn how or watch the tutorial right here. Thus, you will need to wash your jeans in hot water every time you want to wear them for the waist to fit you perfectly.
Loop the button through your belt loop before securing it in the button hole. This way, you won't see the stitching as the belt loops will cover it. Basically, you loop the belt loop closest to the big button on your jeans around said button, which cinches the waist of your pants.