Minimize your midsection. Classic slight curve slim cut jeans. Look For: Stiff, not stretchy, denim. These 99% cotton classics won't cling or create the dreaded "muffin top" that more elastic denim does. Look For: Mid-waisted jeans. Avoid: Falling into the "these jeans are like Spanx!" trap. The higher the cotton content, the better. Avoid: Bold buttons or embellishments at the front pockets.