Creamsicle icing

For the icing on our lemon filled Starlight cake, we made creamsicle icing!

We started with Betty Crocker's creamy vanilla frosting:
- 3 cups powdered sugar
- 1/3 cup butter, softened
- 1 1/2 teaspoons vanilla
- about 2 tablespoons milk

Except we used 4 tablespoons of juice from clementines instead of milk and added about 2 teaspoons of their grated peel.