Step 1

Preheat oven to 350 degrees and spray cake pans with pam baking spray

Step 2

Follow the directions on the back of the cake boxes

Step 3

Divide the batter into three bowls

Step 4

Mix a few drops of pink gel food coloring into 1 one bowl until combined

Step 5

Mix a few drops of yellow gel food coloring into the second bowl until combined

Step 6

Mix a few drops of teal gel food coloring into third bowl until combined

Step 7

Scoop about 1/4 C of the yellow cake batter into the cake pan

Step 8

Scoop 1/4 C of the teal cake batter into the cake pan next to the yellow

Step 9

Scoop 1/4 C of the pink cake batter into the cake pan on top of the teal

Step 10

Repeat steps one more time in one pan

Step 11

Repeat steps in the remaining two cake pans

Step 12

bake in the oven for 25-35 minutes or until a toothpick comes out clean

Step 13

Allow to cool completely

Step 14

Remove the cakes from the cake pans and place them onto a cutting board

Step 15

Place one cake onto the cake board and use the cake leveler to remove the dome from the cake

Step 16

Repeat steps with remaining two layers

Step 17

Using a standing mixer, combine all ingredients except the food coloring and beat until smooth and stiff peaks form

Step 18

Scoop 1 C of frosting into 3 bowls bowls

Step 19

Mix in the several drops of black food coloring into the remaining frosting

Step 20

Mix in 1 color into each bowl

Step 21

Scoop each color into its own piping bag

Step 22

Scoop 1/2 C of Black frosting into the 4th piping bag

Step 23

Place one cake layer onto the cake board

Step 24

Scoop about 1 C of black frosting onto the first cake layer and spread evenly

Step 25

Place the second cake layer on top of the first layer of frosting

Step 26

Scoop another C of frosting on top of the second layer of cake and spread evenly

Step 27

Place the last cake layer on top

Step 28

Using the remaining black frosting frost entire cake and smooth frosting

Step 29

Place into the fridge for several hours

Step 30

Decorating the cake

Step 31

Cut the tips off the four disposable piping bags

Step 32

Using the black piping bag, pipe out the lines of Sally's dress

Step 33

Take the Pink frosting and fill in a few of the squares or rectangles

Step 34

Take the teal frosting and fill in a few of the squares or rectangles

Step 35

Repeat the steps with the yellow and black frosting

Step 36

Using the remaining the black frosting, pipe out the details of the dress

Step 37

Place into the fridge again to allow the frosting to harden up

Step 38

Cut into the slices and enjoy!