TBH I don't actually know if this is a size 10. I believe so, but I don't have the original receipt. I can say that I am 5'2" and at the time weighed around 113 lb. I wore the dress with 3" wedge heels. I wear a 34B bra size. I entered my waist and hip measurements as they are now, when I'm at about 125 lb. The dress was in fact a tad large for me at the time of the wedding, could fit someone slightly heavier (especially the bust could probably go up a full cup size). You can see from the photos it was a little loose. I wear a 26" inseam in pants, if that helps measure.
The dress was extremely comfortable, which was a priority for me and may be for you. Although it was essentially strapless, there was no worry of it falling down because the waist fit snugly.
The dress design is gone from the Stella York page but I will include photos of the original design.
This dress is final sale because there is no way to try it on AND return it in preserved condition. It was professionally cleaned and preserved after being worn once.