Sparkling Peaches & Cream

2 1/4 cups 2% milk
2 tablespoons granulated sugar
1 teaspoon vanilla extract
1 (16-ounce) package frozen unsweetened peach slices
1 (12-ounce) can lemon-lime carbonated beverage, chilled

In a blender container, combine 2% milk, sugar and vanilla. Add half of the peaches. Cover; blend until smooth. Add remaining peaches. Cover; blend until smooth. Transfer to pitcher. Slowly pour in carbonated beverage. Stir gently. Serve immediately.