Depending on your ability with scissors, and the type of “pattern” you like, you may be able to create your own cut-up jeans. In a way, it seems silly to pay for brand new jeans that look worn away. On the other hand, it is easier and quicker to buy them pre-ripped. These kinds of jeans are usually made in pale blues with acid-washed denim, to complete the overall old and worn-away look.
Three examples I find very cool:
Cut up jeans for women pictured:
Left: GOJANE Distressed Acid Wash Jeans light blue
Middle: Gojane Women’s Destroyed Acid Wash Jeans, light blue
Right: GOJANE High-Waisted Distressed Jeans, dark blue