Very nice Proenza Schouler Perforated Leather Knee-Length Skirt sz 2.  The skirt is beautifully detailed with perforated accents at the sides.  The skirt is marked a size 2 and fits true to size.  While the waist is 29", this skirt sits lower on the hips and could possibly go for a size 4, it all depends on the hips and how you like the fit.  

Waist is 29", hips are 34" and length is 20"