Jeans/pants. Waistbandss should NOT be at the hips - they are called waistbands for a REASON. Waists (when actually at the waist) should NOT gap 2 to 3 inches when the hips are snug on someone with (a perfectly average) 10 inches difference between hip and waist.
And that's just my rants about jeans/pants. Fitted type skirts and general choices of color start whole other rants.