I recently watched a tutorial on Pinterest that taught me a new way to make the girls' hair curly. Unfortunately, I did not pin it and I cannot find it anymore. If I am able to locate it I will come back and update this post with a link. It is so very simple and creates much nicer curls than the foam roller method or the pencil and rag method.
You need an elastic hair band like the one below that I bought at Wal-mart. I paid around $2.50 for five or six of them. They were a little too big for the girls' heads, so I just pinned them with a safety pin to make them smaller.
Grab a small section of hair, put it over the top of the band, and pull it through the other side. Add another bit of hair, and repeat. I did this four or five times and then started on the other side. Both sides should meet in the middle at the back, and you just keep wrapping that hair around the band until there is none hanging down. You may need a clip or something to keep the last loose edges in.
One plus to using this method is that it looks really cute when the hair is all wrapped up in the band! Cute enough to wear out...unlike foam rollers. :)
I had my girls sleep on their hair this way and I just unraveled it in the morning, brushed it, and gave it a little more hair spray! The curls last a really long time. Abigail's hair is the hardest to curl, but hers stayed in the best overnight, and he hair is still pretty curly today...three days later!