1. Place one cake, flat side up, on plate. Slide waxed paper strips under bottom edges of cake. Spread scant cup frosting over top. Top with second layer, flat side down. Frost cake. Place star cookies around side. Remove waxed paper strips.
2. Insert lollipop into top center of cake. Arrange peppermint sticks evenly around outside of cake. Arrange animal cookies, flags and ribbons.
1. Beat together powdered sugar, butter, heavy cream, and vanilla in large bowl until smooth. Keep covered with plastic wrap until ready to use. Makes about 3 cups.