I feel like a bit of a dope for it not having ever occurred to me that gloves have a sizing system other than S/M/L, but then again, if you're not shelling $265 for some 16-button (and I now know that in the glove trade, a "button" isn't so much a button, but rather a unit of measurement equivalent to an inch) length kid opera gloves, pretty much what you can jam your paw into is kosher.
"Ladies' gloves are generally sized in half sizes, 6 1/2 to 8 1/2, although I do carry some size 9. To measure, extend your hand, fingers together, and measure around the knuckles of your hand. This can be a bit tricky without help. The measurement in inches is your glove size."
Who knew? And mind you, I'm not opting for the aforementioned kidsleevery. These puppies are setting me back all of $24.95, and I'll just have to do my best to avoid proximity to any active candelabras lest my biceps ignite.
[UPDATE] In the comments, the endlessly, deliciously informed Miss Kathleen Kennedy Townsend noted: "Glovemakers trivia: as it happens, most ladies will find that their glove size matches their shoe size. How cool is *that*!"
Pretty gol-darned cool, I say!