After watching the DVR of an Oprah Episode called, Booty Basics with Stacy London and other stylists assistance to find the best looks for every butt. I related to the first guest with a small waist and big butt and thighs. Stacy didn't really hit on the type of jean she would recommend, but she did state that no matter what jean or pant that you buy you have to have them altered. Buy the pant that fits in the butt and thigh area and then take the rest in-regardless of the size, a better fit is ALWAYS better. That way it isn't tight everywhere else just to fit the waist. But, I did find some jeans from (what Marc Jacobs refers to as the best brand jean out of all of them:) Levi's. The style is Curvy Boot and it does just that, sticks to the right curves. The front lays low, while the back rise is higher ensuring coverage to avoid, "Crack Kills" ever being said to you. These are going to be by far, my fave jeans for a while. And there was a great price point under $100...
If I were to pay over $100, here are a couple of jean brands I have heard are AMAZING for the small waist big booty syndrome:
AG Legend Jeans
Joe's Jeans, Honey Style
James Jean Regular Boot Cut-Hector Zeus
Note: Girls with booties should stay away from jeans with a lot of pocket detail on the back.
For slacks, get the style with a wide band at the waist and a mid-width leg opening so it is not super wide, but not basic straight...this creates a great way to hide imperfections.