Dickies for girls.
Dickies® Girl Official Store
They market them for gothic,rock-a-billy like type scene but they look great on everyone and it makes your butt look really high too. Have nice stretch and also come in plus sizes.
Which actually look nice on the plus size girls I have seen wearing them.
Warning...I bought a larger size because they are Jrs. I washed them in hot water even though it says not to... Shrunk 2 sizes. Which worked out for me because I lost wt and was mad I just waisted 50 bucks on pants...but...just FYI so you know and dont tick yourself off. They are cut to fit your form so if you dont like tight clothing make sure you give yourself a size up. (unless you have strait hips. curves call for a bigger size because of the jrs cut)