Pink Lemonade Pie recipe

1 (9-inch) baked pastry shell or graham cracker crust
1 (9 ounce) container Cool Whip
1 (6 ounce) can frozen pink lemonade concentrate
1 (14 ounce) can sweetened condensed milk (Eagle Brand)

Blend Cool Whip with lemonade concentrate; stir in sweetened condensed milk and pour into shell. Decorate top with thin lemon slices, and chill for at least 3 hours.