In a medium size mixing bowl, add egg whites, champagne, sour cream and strawberry extract and mix until combined and bubbly. This will be your champagne mixture.
In another medium size mixing bowl, whisk together cake flour and baking powder. This will be your flour mixture.
In a large mixing bowl, cream together butter and sugar until light and fluffy.
Add the flour mixture and and champagne mixture in an alternating pattern, while continuing to mix until batter is mostly smooth. There will be a few lumps but don't worry about them.
Mix in a little bit of pink gel food coloring to create a blush pink cake batter.
Pour batter in two greased and floured round cake pans (Dimensions 8x3).
Bake for about 40 minutes at 350 degrees F or until an inserted toothpick in the center comes out clean.
Allow the cakes to cool completely.
While the cakes are baking and cooling, prepare the whipped cream. You can flavor it with either vanilla extract or strawberry extract or champagne extract. I used champagne extract.
Trim the dome and sides of the cake, using a serrated knife.
Place one cake on a cake stand.
Fill a piping bag with icing and attach round Wilton Tip 10 or 12. Pipe dots of icing on top of the cake. Start piping from the outside and work your way inwards.
Place the other cake on top of the icing and press gently to secure it in place.
Pipe dots of icing on top of this cake too. Start piping from the outside and work your way inwards.
Toss some pink and white sprinkles on top and around the base of the cake for a pop of color. Enjoy.