My daughter has a small waist and bigger behind and thighs, so it's hard to find jeans that will fit.  Bobby Jack pants work well because they usually come with a belt or elastic waists and larger bottoms and thighs that fit.  They are also fashionable and cute!  You can't beat the monkey and the embroidery and beadery work....

The only other style of shorts and pants that will fit my daughter are the adjustable waist.  Unfortunately all of the Target jeans/shorts are adjustable waist, but the crotches are too short and the thighs are too tight.