I thought these little slippers were just about the cutest thing ever, and I ordered the pattern through Ravelry. This is the first pattern I've bought this way, and I must say that I really like it. They use Paypal, and you can use your credit card even if you don't have a Paypal account. Ravelry stores the pattern PDF in your Ravelry library for you to access wherever you are!
I picked up a skein of Shepherd's Wool in hot pink for my Katie and one in navy for my Elizabeth. The pattern is really easy and goes very quickly, as you might imagine, on size 15 needles. I happened to have a set of size 15 dpns in my bag (no idea why), and since you never have more than 15 or so stitches on your needle at a time, I decided they'd be perfect. You could, of course, use longer needles and work two sets at the same time if you wanted.
The Yarn Harlot says that it took her 90 minutes to knit a pair. While I didn't time myself on the complete set, I did find that I knit one of the sides in 20 minutes while I waited for Johnny at physical therapy. So, even if you consider yourself a slow knitter, it's fair to say that you could probably whip out the pieces for one slipper in about 90 minutes.
Here's a picture of Katie's right after they came out of the washer before I sewed on the strap.
I made the pink one in the second size (7/8) and the navy in the largest size (9/10). Not a huge difference. You can control the size by stretching the slippers while they are still wet from the felting. I had each of the girls try on the slippers and let them stretch to fit their feet.
Each pair took less than a whole skein of Shepherd's wool, even though the pattern calls for 33o yards of yarn. I checked my gauge before felting, and it was correct, but even so, perhaps I knit a bit tighter than the designer. A very loose gauge is tricky to measure. Anyway, both girls are happy with their slippers. Now I need to knit a pair for myself - maybe rhinestone buttons are in order...