NEVER thought I'd say it, as high-waisted styles just DO NOT work for my body, but these look (and feel) Amazing on me. They are super-comfortable, reallllllllly sexy, and work with some of my favorite Faithfull The Brand dresses that are just a tad sheer.
I bought the matching bra (see my review), which is also fabulous, but sadly doesn't work for my body-type. I'm hoping HAH will come out with another matching bra/bralette option for these knickers.
As for size, I like how these fit and feel - the waist band is a tad big on me, but the rest feels perfect. I've found that I am a small in HAH thong-style undies, but in other styles the small is a tad snug (across hips) and the mediums a tad big (at waist). I prefer the mediums in these as they are comfortable across my thighs (which are not small). I'm a size 28 in (most) jeans that have stretch, for reference.