In a small bowl combine powdered sugar, vanilla, and milk. Stir in additional milk or juice, 1 teaspoon at a time, until it reaches drizzling consistency. Makes 1/2 cup (enough to drizzle over one 10-inch tube cake).
CHOCOLATE POWDERED SUGAR ICING:
Prepare as above, except add 2 tablespoons unsweetened cocoa powder to the powdered sugar. Do not use the orange juice.