In a medium sized bowl, add the softened cream cheese, mayonnaise, sour cream, mozzarella cheese, cheddar cheese, Hidden Valley ranch dressing packet, and chopped bacon.
8 oz cream cheese, 1 cup mayonnaise, 1 cup sour cream, 8 oz mozzarella cheese, 4 oz cheddar cheese, 8 slices bacon, 1 envelope Hidden Valley Ranch Dressing mix