1. Prepare the Crust:

1. Preheat oven to 350°F (175°C).
2. Combine graham cracker crumbs, melted butter, and sugar in a bowl. Press mixture into the bottom of a 9-inch springform pan.
3. Bake crust for 10 minutes, then allow to cool.
4. In a large bowl, beat cream cheese until smooth, then add lime juice and lime zest.
5. In a separate bowl, whip heavy cream until stiff peaks form, then fold into the cream cheese mixture.
6. Pour mixture over the cooled crust and refrigerate for at least 4 hours before serving.