Creamy Pineapple Pie

1 can sweetened condensed milk
1 can 8 oz crushed pineapple, undrained
1/4 cup lemon juice
1 carton 8 oz whipped topping, thawed
9-inch prepared graham cracker crust

In bowl; mix sweetened condensed milk, lemon juice and pineapple. Fold in whipped topping and put into crust and chill until ready to serve, 1 to 2 hours.