1 (6 oz.) can froze lemonade concentrate, thawed
4 c. low-calorie cranberry juice cocktail
1 (16 oz.) bottle lemon-lime carbonated beverage
8 thin lemon slices (optional)

Stir lemonade concentrate into cranberry juice cocktail. Slowly add carbonated beverage; stir gently. Serve over ice. Garnish with lemon slices. Makes 8 servings.