Princess Rainbow cake

I have always wanted to make a kitsch Barbie cake, but I have 2 boys. So when I heard Holly wanted one for her birthday - I was in! Being a mad Pint-rest fan I have seen all the rainbow cakes and have wanted to try that too. So I combined the 2. The  glitter pattern was painted on with a wet paintbrush and the sprinkled the glitter over it and blew away the excess glitter. Now tonight I am making a skateboard cake as Holly is sharing her party with her little brother (my godchild) - couldn't leave him out.