My natural waist is 29, but I always wear them lower, 30".
I'm 5'2, 115lbs. Since these had adjustable waist tabs, I bought a small. With the waist tabs as tight as they would go, they were still too big. I could pull them down to my hips. Unfortunately I could not exchg for xsmall, so I returned them.
If they had fit, I wouldve rated them perfect.