Do Pacsun Shirts Shrink?

First of all, unless you are washing the item in HOT water, it will not shrink in the wash. Put it in the dryer and YES, it will shrink. Most clothing items these days are designed to wash in COLD water, so no shrinkage there.

Does Pacsun run big?

They do run true to size if you are wanting the slightly oversized look… I am wearing a size 25 here for your reference, but could've sized down to a 24 for a more slim-fit.

Will a 100% cotton shirt shrink?

If it's 100% cotton it's as easy as a few simple steps. ... Most cotton shirts, not pre-shrunk, will only shrink about 20% from its original size. The best way to shrink a shirt, is the old fashioned way, to wash it incorrectly.