I would love to make a cake decorated with fondant rainbow hearts. Actually if I had a time machine this would be my wedding cake.

I ♥ Rainbows Cake

Such a darling rainbow heart cake from Erin of Wild Orchid Baking. Such great inspiration for a rainbow birthday party!

How To Make A Sprinkle Cake | Sprinkles for Breakfast

Ultimate DIY Sprinkle Cake

Carnival - Cake  http://floridahoganfamily.blogspot.com/2013/10/camryns-carnival.html

This is a great cake that seems to combine ideas. Since we're doing a rainbow and flower garden, I thought this was potentially a good approach. I don't think we'd need three layers - two should be enough.

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