1 lg. (5 5/8 oz.) pkg. instant vanilla pudding
1 (8 oz.) sour cream
1 (8 oz.) Cool Whip
1 box vanilla wafers
3 1/2 c. milk
8 med. bananas

Mix pudding and milk until firm. Add sour cream and Cool Whip, saving a little Cool Whip for the top. Layer bananas, vanilla wafers and pudding mixture. Top with remaining Cool Whip. Better to make ahead. Keep refrigerated.