H.H.
Same here, my son will only wear sweat pants and pull over tops. No jeans or anything with zippers, buttons, or faseners of any kind. And he is 6! When I took him BTS shopping I let him pick out his own clothes, hoping that would help. He found two pair of army camo pants (one in green and one in gray) that he really like which had button/zip fronts. He will wear those only when he is out of sweatpants or if I insist. It's still a bit of a battle if I need him to dress up (which thankfully isn't too often) but I just stock up on the nicest sweats I can find and hope he grows out of this phase soon ;-)!! best of luck to you!