Steve Urkel outfit

VIArts

high waist pants with suspenders for males

vwrangler

Well, they've got everything but the suspenders: https://www.daz3d.com/nerdy-guy-outfit-for-genesis-3-male-s

And suspenders here, though whether or not they work for anything but the outfit they came with is unknown: https://www.daz3d.com/dforce-casual-craze-for-genesis-8-males

You may be about to autofit forward or backward, depending on what figure you want it for.