In a medium mixing bowl, pour in the cake mix. Pour the Sprite in slowly, and stir together until all lumps are removed.

Scoop batter into cupcake liners, filling ¾ full. Bake for 18-20 minutes, or until a toothpick inserted into the center of a cupcake comes out clean.

Allow cupcakes to cool on a cooling rack.

For frosting: Combine cream cheese, butter, powdered sugar, lemon zest, vanilla extract, and lemon juice in a medium-sized mixing bowl.

Blend together with a mixer until all ingredients are combined. Add additional powdered sugar if a thicker frosting is preferred.

Scoop frosting into piping bag using desired piping tip to frost cupcakes.

For cupcake toppers: Cut out circles from print out. (Click image to enlarge for printing)

Use two identical circles per cupcake topper. Place one circle printed side down on a flat surface and cover the back in glue.

Place the stick in the center of the glued circle. Cover the back of an identical circle in glue and place it printed side up over the circle with the stick in the center. Make sure the edges line up and press all edges closed until glue is completely dry.

Sticks may need to be shortened depending on the length being used. Place the completed cupcake topper in the center of a frosted cupcake.