“Birthdays are nature's way of telling us to eat more cake.”
The Barbie cake I did for my godsister a couple of years ago was like that...she requested three tiers, navy blue, pink, white, with yellow and red hearts and a barbie on top wearing a specific outfit. I still have the drawing she made me to "help" me in this endeavour. It actually turned out pretty awesome and is one of my favorite cake decorating memories! I love it when the birthday kids have their own input on the cake. Kudos to her grandma for going with it!
Thanks for your input.