I bought these boots for a throwback 60s holiday event.  They were a hit and made my outfit if the compliments on the boots were the any indication of the boot success.  I usually wear an 8.5 (post foot surgery) and these were M/L which I think were classified as a 9/10 and fit perfect with pantyhose, which made my calves a bit thinner as well because the leg was a bit slender for me.  They have a small amount of stretch too, which may help as well.