**Prepare Cream Cheese:** In a large bowl, beat the cream cheese with an electric mixer until smooth.
**Add Ingredients:** Mix in sweetened condensed milk, lemon juice, vanilla, and powdered sugar until combined.
**Whip Cream:** In a separate bowl, whip the heavy cream until stiff peaks form.
**Fold Cream:** Gently fold the whipped cream into the cheesecake mixture.
**Pour and Chill:** Pour the filling onto the prepared crust and smooth the top. Cover with plastic wrap and chill for at least 12 hours or overnight.