Where do you purchase jeans and such for your male significant others?

As I have been going through my style journey, I have been eyeing up his closet as well. He will only wear jeans unless it is mandatory he wear something else, so he has a pair of khakis he wears maybe twice a year.

He doesn't like long sleeves, too constricting he says, even in Wisconsin winter. So he has a dresser full of tees. Crew neck only, will NOT wear v neck. He got a couple of those for his birthday, and they still sit with the tags on them.

Where do you get shoes and what brands? I am not sure if he has fussy feet or not, but he wears sneakers every day, even to work. Gotta love casual dress code. So they would have to at least be that comfortable.