Merry Vanilla Birthday Cake!

Ingredients:
- 2 1/2 cups cake flour
- 3/4 cup all purpose flour
- 1 tablespoon baking powder
- 1 teaspoon baking soda
- 3/4 teaspoon salt
- 1/2 stick unsalted butter softened
- 1/2 cup vegetable shortening
- 1 3/4 cups sugar
- 1 tablespoon vanilla extract
- 1 large egg
- 1 1/2 cups ice water
- 3 large egg whites
- 1/4 teaspoon cream of tartar

Directions:
- Read up on http://bit.ly/1ENzOtI