I'll second what kast said, and relay a point someone said to me about the same issue:
If you're a stocky built guy, you'd be expected to have fitting legs and butt, big legs and butt are ok if it matches your frame.
You could try sagging your pants, going for tighter shirts and baggy jeans, they should help.
Try not to stress it, T will fix it at the very least 🙂