Blueberry Orange Smoothie

*From Holly Rigsby

12 ounces frozen blueberries, unthawed. . . Or. . . 2 1/2 cups fresh blueberries
8 ounces vanilla low fat yogurt
1/2 cups orange juice
1/2 cups milk
1 teaspoon vanilla extract

Whirl all ingredients together in a blender until smooth. Serve immediately