Preheat oven to 425 degrees F. Whisk pumpkin, sweetened condensed milk, eggs, vanilla, and spices in medium bowl until smooth. Pour into crust. If so desired, place pie crust shields or tinfoil over pie crust to avoid crust getting too brown. Bake for 15 minutes.
Reduce oven temperature to 350 degrees and continue baking 32 to 38 minutes or until knife inserted comes out clean. Total baking time is 47-53 minutes.
Cool. Refrigerate for at least one hour.
To make whipping cream: In a medium bowl, whip cream until soft peaks form. Add powdered sugar and whip together.