There are way to many vendors carrying JUSTUSA jeans, so the best possible answer is to call the main manufacurere at 213-748-1711 and they can help you tell you what stores carry JUSTUSA jeans.
One can buy Affliction jeans online from their official website. One can also buy also buy these jeans through a reseller such as "Bootleggers" or "Macy's".
One can purchase Mavi Jeans from a number of retailers online. They are available to buy from 'Zappos', 'Nordstrom', 'Just Jeans', 'eBay' and 'birdsnest'.
You can buy a rainbow jeans from Hot topic or you can buy white jeans and then do tie dying on them.
One can purchase from a viriety of cargo jeans online at Amazon where these jeans are available. One can also buy these jeans from the retailer The Gap.
you can buy it on any website of a store that sells ripped skinny jeans (e.g. hollister)
If you want to buy the jeans direct from Diseal, you can go to http://www.diesel.com/. If you want a better price for your jeans try http://www.jeans-direct.com/
Girls jeans can be found online at numerous outlets. Walmart, Target, JC Penney's, Sears, and Overstock are just a few. Old Navy seems to be a popular place for teens now.
There are many places where one can buy Moschino brand jeans online. One can purchase Moschino brand jeans at popular on the web sources such as the official Target website, Amazon, and eBay.
You're best bet is to buy them online. I've attached a link to a good site that breaks down where to buy jeans.
One can buy Levi's Silvertab jeans from many stores and online retailers. They are available to buy from Macy's, eBay, Amazon, Nordstrom, JC Penny and the Levi online store.
you have to buy them online
The best place to buy any jeans is online. You'll get the best selection. I attached a useful article about mom jeans.