in a large mixing bowl, mix together the cake flour, baking powder, baking soda and salt
in a mixer, cream together the butter and sugar until it’s fluffy; add the eggs one at a time and mix them until they are fully combined; mix in the vanilla
whisk together the champagne and sour cream until it looks like a bubbly milk
add the flour and champagne mixtures in alternating increments into the mixture until everything is fully combined; do not over beat to maintain moisture in the cupcakes
fill cupcake liners in a pan ⅔ full; bake 18-20 minutes
For The Frosting:
puree about a cup to a cup and a half of strawberries in a blender
cream together the butter, 2 cups of the powdered sugar, salt and vanilla in a mixer
add the cream and strawberry puree; mix well, slowly adding the rest of the powdered sugar until the frosting is creamy
frost cupcakes & top with sprinkles &/or champagne bubbles; enjoy!