I have a favorite pair of jeans I haven't worn in 3 months. They were washed and dried. When I wore them they felt tight, but this time they felt tighter than they usually feel after shrinking in the dryer. They are 97% cotton. I know I haven't gained weight. If anything I am the same weight or lost weight since I have been working out a lot and running. Could it be they shrink MORE with each wash? Also could it be I havent worn them in months? Thanks!