For denim clams, try Inc (Macy's store brand). These:
http://www1.macys.com/catalog/.....ryID=19302
I think they are sold out in the regular size online, if you need that. (I am petite). Try the store. These fit great for slim thighs/butt with wider waist. They are more of a mid-rise, and the denim is very lightweight, which is ideal for hot summer weather. They do not feel too tight or binding at all - very comfy! I only wish they made the exact same, in a white denim! I am still looking for white denim clams myself.
For white jeans, I have Citizens of Humanity Amber bootcuts. You might also try the Kelly's - I understand they make them in a low AND a mid-rise (at least 8-1/2 inches, maybe 9?). I tried the Kelly mid-rise on awhile back in dark denim - did not buy because I have enough jeans, but they fit great and were super comfy with loads of stretch.
If you want dark denim skinnies - and have slim calves and ankles - I would recommend Urban Outfitters high-rise cigarette jean. For $68 they are a good deal, but be forewarned they are super super slim! And, they do shrink quite a bit, so start with a size that is a tad too loose. They are very comfy, feel like you are wearing running pants.