That a straight hip.
You'll have a problem finding any girl pants that fits.
Women's pants usually have 10 inch diff between
waist and hips, low waist ones have about 7-8 inch.
I'm now 26.5 waist, 36.5 hips (6 foot tall, very thin!),
which means about size 4-6 depending on the company.
Even size 0 hipster will be a problem unless you've
got a belt. I don't want to sound like a bummer. But,
that's how it is.
Since you've got a straight hips, I'd go with a loose flared jeans, don't go for anything tight down there or you won't look too good.
Trousers, which have a looser fit than jeans could make you look better.
33 inch under bust doesn't necessarily mean 38. I'm 32 inch under bust and a 34C fits. It depends how much muscles you've got over that. The ladies home journal bra sizer is the best I've seen, they measure over the breast instead of under (this takes better into account the fact that initially we've got more upper body muscles).
I think getting the bra fitted is the best option.
I started at 35.5 inch under the bust and lost 3.5 inch there because of muscle mass loss in the back!! I wore a 38B, but half that size was certainly half pect muscle. Now, I am in theory smaller in volume (34C) but I know I've got a lot more real breast tissue.