Did you know that it is OK to wash your jeans? I get the call all the time, a customer heard from a friend, or on a denim forum, etc. that it is a no-no to wash your jeans. While I don't recommend washing your jeans after every wear, by no means would I tell you never to wash your jeans if you want to.
If it's a pair of raw jeans, in particular, you will want to consider how you want the jeans to look in the long run. The longer you wait in between washes, the more dramatic and "dirty" your jeans will wear in. The more frequently you wash, the more subtle and cleaner the fades will be. So it's up to you and your personal preference.
Now, this goes for any brand of jeans you own. When you do decide to wash them, whether you put them through a rinse in the washing machine or let them soak in the tub, make sure it's cold water so they don't shrink unexpectedly, and add some soap! Just don't put them in the dryer. Hang them up to dry, your jeans will last longer that way.