For many teenagers, when it comes to clothing, it's all about the labels. This was generally not the case for me. I do remember being very happy about getting a jungle animal shirt that I wanted from Banana Republic.
As far as jeans went, I'm pretty sure my Mom got me the "Husky" variety from Sears.
If you watched Saturday Morning TV in the 1980s, you could not avoid the animated commercials for Levi's Jeans. They were very well done, featured a wild assortment of characters, and were clearly aimed at older kids and young adults.
If you liked those ads, you probably would have decorated your Trapper Keeper with these stickers, and had this poster that you colored yourself on your bedroom wall. These offers could be found in comic books like Heathcliff and Fraggle Rock in 1985.