I did this princess cake very last minute for a friend. She wanted a princess cake with a tiara. I made the tiara two days before the party (the day she called me!) The tiara is gum paste mixed with fondant, and sugar jewels made from isomelt.
I used a 10in and 6in pan for the cake. The entire cake is covered in fondant and shimmered with luster dust. The diamond pattern took me at least an hour to complete. The top layer is decorated with rolled fondant and small cut-out circles. (I used the one of the tips in my baking case.) The tiny dots in between diamonds are also fondant. My friend and all her guests loved this cake! The tiara really set it off!