Take your pie crust and line the bottom with sliced bananas (should take about one banana to cover bottom).
Pour 2 cups of whipping cream into a bowl and beat on high with a hand mixer (or mix in standing mixer) until soft peaks form when you pull up a paddle. Set aside.
Pour your pudding mix into a bowl and add the milk and vanilla. Whisk to combine for 2 minutes and then fold in 1 1/2 cups of your whipped cream gently until combined.
Pour the pudding mixture over the layer of bananas in the pie crust and smooth the top with a spatula.
Gently add the rest of the whipped cream to the top of the pie and spread out to cover the top of the pie.
Stick Nilla Wafers all around the edge of the pie.
Place in fridge for 2 hours to fully set. Decorate with fresh bananas right before serving and enjoy!