I got this ring in the size Q. I'm unfamiliar with this sizing system, so I had to do a bit of conversion before choosing the right size. I have large hands compared to other girls, and so on my ring finger I normally take a size 7, roughly size N. This ring has a wide band, so it was advised to order the next size up, which I did. AND IT'S PERFECT! I really love it, the ring looks great, the details are nice.