2 (12 oz.) cans pineapple juice
1 (6 oz.) can frozen orange juice concentrate, thawed
1 (6 oz.) can frozen lemonade concentrate, thawed
4 c. water

Combine all ingredients and chill thoroughly. Just before serving, transfer to punch bowl. Carefully pour 2 (4/5 quart) bottles of chilled champagne down side of bowl. Stir gently. Trim with orange slices. Makes 40 (4 oz.) servings.