Separate the prepared cake mix batter into 4 bowls. Add a different color to each bowl. Mix until completely combined and pour each bowl into a greased and floured 8-inch round cake pan.

Bake as directed on the cake box.

After the cakes have cooled completely remove them from the cake pans.

Using a stand mixer, cream the butter, slowly add the sugar and vanilla. Add the milk, whip until creamy. I find using a stand mixer instead of my hand mixer it makes the frosting extra creamy.

Frost each layer, don't skimp on the frosting! Top with the Unicorn horn and eyelashes.

You can add additional flowers if you'd like, we decided not to. We decided to keep the cake with a rounded top.

Unicorn Horn decoration for the cake. Found this really cute one on Amazon.