stretching legs of jeans after wash

[alleyooptroop]

planning to wash my straight svens soon. i was wondering what everyones methods were for stretching the legs out so they didn't shrink too much. my svens are the perfect length so i can't afford for them to shorten. do you just stand on the waist and pull on the legs? how long do you pull? i saw the technique with the weights on mynudies but i don't plan to rig something up that elaborate. thanks in advance for any replies.