I just came across these pictures and I think this hairstyle was done sometime in January. It's fairly straight forward but there are some helpful tips for you.
Start by parting the hair down the middle. (I've pulled some of her bangs into one side in the front as well.) Now that you have your vertical halves, divide each into half horizontally so that you now have 4 sections.
Tie off 3 of the section with elastic and begin to french braid the 4th section. Braid all the way to the end of the hair and tie it off with an elastic. French braid all the sections and tie them off. (Tip: for the bottom French Braids, have your princess lay on her tummy on her bed so that her head is upside down over the edge of the bed. This will make doing the upside down braids MUCH easier.)
(Okay - this part could've definitely been straighter! ha ha) Now that you have your 4 French Braids completed you'll want to combine the top and the bottom on each side by twisting the two braids around each other and forming a bun. Secure the bun with a tight elastic. Do the on the other side as well. Now just choose your favorite ribbons and wrap them around the bun, creating a bow, to finish off.