Ingredients

4 lime slices3 tablespoons coarse sugar1/2 cup chilled lemon-lime soda1/2 cup tequila1/2 cup blue curacao1/3 cup partially thawed frozen limeade concentrate2 cups ice cubes

Preparation

Using lime slices, moisten the rims of 4 margarita or cocktail glasses. Set aside lime slices for garnish. Sprinkle sugar on a plate; hold each glass upside down and dip rim into sugar. Set aside. Discard remaining sugar on plate.

In a blender, combine the remaining ingredients; cover and process until blended. Pour into prepared glasses. Garnish with reserved lime slices. Serve immediately.