1 (20 oz.) can crushed pineapple, in natural juices
1 box vanilla pudding, sugar free
1 (8 oz.) carton sour cream
1 (8 oz.) carton cool whip
graham cracker crust

Mix first 3 ingredients plus a small amount of cool whip until thoroughly mixed. Pour into a graham cracker crust and top with remaining cool whip. Set in refrigerator for about 1/2 hour before serving.