Here's my take on the Wiggles Cake. I made this a couple weeks ago for my son's third birthday who is a huge Wiggles fan. I got lots of great ideas from this site. The icing is buttercream and I used fondant for "The Wiggles" logo on the car, the rainbow (writing is in royal) wheels, and the Wiggles characters. I had a lot of fun making this one.