I love this technique. I used it all throughout the summer when I found out about it. I actually tried to take some pics, but they didn't really turn out. So here are some pics and videos to show you how to do it. It is so easy and looks so polished and nice. This would be great for a Christmas party.
Here is a video of the original sock bun, more details but the same concept as above.
Here is another way to get the sock bun look. This may work better for you if you have a lot of layers.
To get the sock bun curls, just do the same technique but make sure to spray your hair with product or water to make it damp, but not wet. Sleep in it overnight and pull the sock out. If you need to fix some pieces, just use a curling iron or flat iron. I tried this technique but my hair was too damp so when I took out the bun the next morning my hair was still wet and the curls hung. It would have looked great if it had more time to dry. I also didn't use any product and I think I may try that next time. This is a great idea for 5 minute hair. Even if it is just a good starting point to add more curls with your curling iron. It is sure to save you a ton of time.