I did this January 2010 for my middle daughter's 4'th birthday. I did this before I took any classes, so I was using canned frosting and it was a bit too soft to pipe. My oldest daughter put some pink sugar sprinkles on her skirt so it sparkled like the bodice on the actual Barbie. I would use buttercream or fondant now. :)

I always wanted one of these as a kid. They had one in a glass case on the bakery counter in the grocery store that I always admired. I was disappointed to find out that many of these cakes use a half-barbie pic inserted into the top. I decided to try my hand at inserting a whole Barbie. I used a bunt pan and two rounds of the same width. I used the humps from the two rounds to fill in around Barbie's waist.