The Best Orange Creamsicle Cake - Cake by Courtney

Name: Creamsicle Cake
Yield: 20
Ingredients: 7 Egg whites; 1 1/2 tbsp Baking powder; 4 1/2 cups Cake flour; 2 1/4 cups Granulated sugar; 4 tsp Orange extract; 6 1/2 cup Powdered sugar; 3/4 tsp Salt; 3 1/2 cups Butter, unsalted; 1 1/2 cups Buttermilk; 1/4 cup Heavy cream; 1 cup Heavy whipping cream; 3/4 cup Sour cream; 1 oz Jell-o, orange; 1 tbsp E-z gel (or other cream stabilizer like gelatin); orange food gel (optional); Orange food gel (optional)