I'm 5'4 and these boots sat right over my knee.  Before purchasing, I read some reviews that the boots sometimes would fall down and scrunch at the boot.  I wasn't worried about that considering that my calves are bigger than most at a size of 16 inches circumference!!!  These boots are 16.5 so they fit perfectly!

True to size so I would NOT order a .5 size smaller.  The boots also look better on than they do in the box so do not get a little discouraged when you 1st open the box!! Put them on and you will see how great these boots are!! You can wear them with leggings and dress it up for a night out OR you can wear them over skinny jeans and go with the casual trendy look (an oversized tunic top would complete the look with a cute scarf and earrings that pop).

You get the best of both worlds.  You get the over the knee trendy boot look while having a heel that's not too high which can sometimes make a boot that falls over the knee look like hooker boots (which these do not!).

I DEFINITELY recommend!!!!!  Super fast shipping and they include 2 heel tips for when the original ones wear!!!!