Add the strawberries, lime zest, lime juice, sweetened condensed milk, tequila, and orange juice to a blender or food processor. Process until completely smooth.
Pour this mixture into a large bowl and set aside.
Using either a stand mixer or electric hand mixer, beat the heavy cream until stiff peaks appear.
Slowly fold half of the whipped cream into the strawberry mixture. Once the first half is combined, fold in the remaining whipped cream.
Pour the pie filling into the graham cracker crust. Freeze for at least 5 hours.
To make the whipped cream topping
Using either a stand mixer or electric hand mixer, beat for 30 seconds or so. Add the powdered sugar.
Beat the heavy cream until stiff peaks appear.
Spoon onto the top of the frozen pie and sprinkle with lime zest.