Well, after reading Ashley's very true comment regarding the large problem with headbands shifting, and being removed by the flower girl herself, I decided to go a totally different route. I found a wreath on etsy that is just lovely, and I can pin it into place. No messy hair before she makes it to the end of the aisle. I am thinking a bun with this wreath pinned around it.
These little flowers are handmade with cold porcelain and they are perfectly dainty. You can find them at Hitomi Designs. You can customize the colors, and she also offers precious headbands like this
flower girl perfection.