Prepare the Graham Cracker Crust by combining crushed graham crackers with melted butter in a mixing bowl. Firmly press the mixture into the bottom of a trifle dish or individual cups. Chill in the refrigerator for at least 30 minutes.

In a chilled mixing bowl, beat the softened cream cheese until smooth and creamy, about 2 minutes. Gradually add sweetened condensed milk, fresh lime juice, lime zest, and vanilla extract, blending until light and completely combined.

In another chilled mixing bowl, whip the heavy cream and sift in powdered sugar. Whip on medium-high speed until soft peaks form, about 3 to 5 minutes.

Gently fold the whipped cream into the cheesecake mixture until fully combined, ensuring to maintain the airiness of the whipped cream.

Spoon the cheesecake layer over the chilled graham cracker crust in the trifle dish. Smooth the top and if desired, add extra layers of graham crumbs or whipped cream. Cover and chill for at least 2 hours.

Before serving, garnish with lime slices and a sprinkle of lime zest. Serve chilled, showcasing the layers.