Beautiful thong, I adore the detailing on this set. I knew I had to order all three pieces as soon as I saw the design, my usual size 10 was already out of stock so I went with the 12 that was left and actually it fits beautifully- so I would say your usual size or the next size up in this set would be fine. As they have the satin detail there isn’t too much stretch to the thong.
Rated 1 on a scale of minus 2 to 2, where minus 2 is Poor, 0 is Good and 2 is Excellent
Rated -1 on a scale of minus 2 to 2, where minus 2 is Small, 0 is Just Right and 2 is Large