Try Calvin Kleins. They didn't work on me until I gained a little weight and then they were perfect. You might have to hunt to find non-stretchy ones though.
And go the vintage store/goodwill/what have you and look for old, GOOD women's nonstretchy Levi's. The back patch needs to look like
this. If it says "Every Garment Guaranteed" on it run fast, run far. That is when Levi's started going downhill. Of course the Levi's with fancy schmancy pockets are just no.