I'm a tall petite and bought these in a 10P.  I love the fit through the waist, hip and thighs but was disappointed by the quality of the fabric and the fact that even though I washed them in cold water and dried them on low, they shrank a little.  They still look good, but still.  I got them at Beall's of Florida online on sale for $22.  Try the Levi's 512 Perfectly Slimming Jeans -- $34.99 at Macys, but the fabric is a better quality and they didn't shrink on washing.