• Preheat oven to 350 degrees.
• In a mixing bowl, combine flour, baking powder, baking soda, and salt.
• In a stand mixer, whisk together butter and sugar until light and fluffy. Stir in above dry ingredients (will turn into a thick mixture).
• Add in vanilla, champagne, sprinkles, and milk. Then add in egg whites - one at a time. Stir until well combined.
• Fill cupcake liners to 3/4 full. Reduce oven temperature to 325 degrees. Bake for 25 minutes or until you insert a toothpick and it comes out clean.
• Once done, allow cupcakes to cool completely before icing.

Frosting:

• While cupcakes are baking, beat together butter and shortening until creamy. Add in vanilla and champagne. Then add sugar 1c. at a time. Add 1-2 tsp. of food coloring. Fold in sprinkles.
• Pipe on cooled cupcakes. If frosting is too dry add a few Tbsp. of milk, if too wet add a little more powdered sugar.