If you purchased your pie crust, set it aside. If making, in medium mixing bowl combine graham cracker crumbs and sugar, once combined mix in butter until mix resembles sand. Press into pie plate and set aside (can chill in refrigerator if desired). Place sugar, vanilla and softened cream cheese in the large mixing bowl. With hand mixer on low start to combine, this helps break up the cream cheese. Once smooth add in heavy whipping cream. Mix on low until incorporated then slowly turn up to high. Mix until light and fluffy. Pour onto pie crust and smooth. This can be topped at this point with topping or eaten plain. Is best when chilled for about an hour- if you can wait that long.