Vanilla Almond Cupcakes with Star Decorations

Ingredients

• 1 3/4 cups cake flour
• 3/4 tsp. baking powder
• 1/4 tsp. baking soda
• 1/4 tsp. salt
• 1/2 cup unsalted butter (room temperature )
• 1 cup sugar
• 3 large egg whites (room temperature)
• 1 1/2 tsp. vanilla extract
• 1 tsp. almond extract
• 1/2 cup full-fat sour cream (room temperature )
• 1/2 cup whole milk (room temperature )
• 1 cup unsalted butter (room temperature)
• 4 1/2 cups powdered sugar
• 1/4 cup heavy cream
• 1/2 tsp. vanilla extract
• 1 1/2 tsp. almond extract
• salt to taste