Preheat your oven to 350 degrees Fahrenheit. Grease three 6-inch baking pans. In a large bowl, combine the strawberry cake mix with one can of 7 Up (or other lemon-lime soda). In another bowl, combine the lemon cake mix with the remaining can of 7 Up. Divide the batter into 3rds, you will have one layer that is strawberry, one layer that is lemon, and the middle layer is strawberry and lemon swirl, then add cake batter to all three pans. Bake in a preheated oven for 25 minutes or until a toothpick inserted into the center comes out clean. Allow cakes to cool completely before removing them from the pans.

Prepare your Vanilla Buttercream Frosting according to package instructions or use your favorite recipe. Once cooled completely, carefully remove each layer from its pan and set it aside on parchment paper or cutting boards. Place one layer on your desired serving tray and spread a generous amount of frosting over top using an offset spatula or knife. Place the second layer on top of the first layer and spread more frosting over the top as you did before, repeating with the third layer when done. Spread the remaining frosting over the entire cake until you reach the desired look. I placed the swirl layer in the center of the cake, but you can stack them however you like.

To make the Easter Bunny face and ears begin by adding ears on top, then the nose, and eyes.  Voila—your bunny is complete!   Amazon.com: Easter Bunny Cake Topper with Eyelashes Easter Party Cake Decoration Supplies for Birthday Party, Wedding, Baby Shower, Spring Eater Party Decorations : Grocery & Gourmet Food