After over a year of searching for a sleep cap that isn't too loose or too tight, that has enough room for all her hair underneath it, and that stays on all night, we have finally found THE ONE.
Check them out at Pretty AnntoiNet's Silk Lingerie for Hair online store. They are 100% silk, and made just for girls, bonnet style. The band is part elastic, part silk tie; you can make it as tight or loose as you need to, so it will grow with your child's head. The elastic is covered in silk, so no rubbing on the hairline and the silk tie is exposed and cute tied in a bow. As a bonus, they are really gorgeous and luxurious looking. At $18.00 each they are the most expensive sleep cap we have tried. For us, though, the price has been worth it.
My girl wears the cap like this with the tie in the back so the tie won't hang in her face:
But this is what it looks like with the tie in front. Super adorable!