Fruit Juice Cooler

1-1/2 cups peach nectar
1/2 cup orange juice
1/4 cup grapefruit juice
2 tablespoons lemon juice
1 can (12 ounces) carbonated water, chilled
Ice cubes

Combine juices in a 1-qt. pitcher; chill. Just before serving, stir in carbonated water. Serve over ice. Makes 4 servings (about 1 quart).