This is so odd that I just had to post it. Yes, it is a bit out there, but to each their own.
The Japanese, who know their weird lingerie, have come up with a princess-themed line of undergarments. Bellemaison has lingerie for Belle, Cinderella, Aurora (Sleeping Beauty), and Rapunzel. It is so girly that is almost in another dimension of girliness.
Now this might not be appropriate for the little princesses out there, but perhaps some of the older ones will find it amusing.