Follow the directions on the packages of pudding mix.
Add the whole tub of sour cream and half of the Cool Whip. Make sure it is well blended.
Chop the bananas and add them to the pudding mixture. Save 5 or 6 wafers.Add the remaining wafers to pudding. Mix well.
Smooth the pudding out. Add remaining Cool Whip on top, then crush the vanilla wafers and sprinkle it on top of the cool whip. Chill overnight if you want your wafers soft. If you like them crunchy, only chill for one hour before eating. Enjoy!