• Preheat oven to 350 degrees and spray cake pans with pam baking spray
• Follow the directions on the back of the cake boxes
• Divide the batter into three bowls
• Mix a few drops of pink gel food coloring into 1 one bowl until combined
• Mix a few drops of yellow gel food coloring into the second bowl until combined
• Mix a few drops of teal gel food coloring into third bowl until combined
• Scoop about 1/4 C of the yellow cake batter into the cake pan
• Scoop 1/4 C of the teal cake batter into the cake pan next to the yellow
• Scoop 1/4 C of the pink cake batter into the cake pan on top of the teal
• Repeat steps one more time in one pan
• Repeat steps in the remaining two cake pans
• bake in the oven for 25-35 minutes or until a toothpick comes out clean
• Allow to cool completely
• Remove the cakes from the cake pans and place them onto a cutting board
• Place one cake onto the cake board and use the cake leveler to remove the dome from the cake
• Repeat steps with remaining two layers

Vanilla frosting directions :

• Using a standing mixer, combine all ingredients except the food coloring and beat until smooth and stiff peaks form
• Scoop 1 C of frosting into 3 bowls bowls
• Mix in the several drops of black food coloring into the remaining frosting
• Mix in 1 color into each bowl
• Scoop each color into its own piping bag
• Scoop 1/2 C of Black frosting into the 4th piping bag

Building the cake

• Place one cake layer onto the cake board
• Scoop about 1 C of black frosting onto the first cake layer and spread evenly
• Place the second cake layer on top of the first layer of frosting
• Scoop another C of frosting on top of the second layer of cake and spread evenly
• Place the last cake layer on top
• Using the remaining black frosting frost entire cake and smooth frosting
• Place into the fridge for several hours
• Decorating the cake
• Cut the tips off the four disposable piping bags
• Using the black piping bag, pipe out the lines of Sally's dress
• Take the Pink frosting and fill in a few of the squares or rectangles
• Take the teal frosting and fill in a few of the squares or rectangles
• Repeat the steps with the yellow and black frosting
• Using the remaining the black frosting, pipe out the details of the dress
• Place into the fridge again to allow the frosting to harden up
• Cut into the slices and enjoy!