Ms. Betty's Key Lime Pie

The easiest and best Key Lime Pie you'll ever make.  The recipe came from Ms. Betty, a friend of my Mom's in Franklin.

1/3 Cup Key Lime Juice
1 can sweetened condensed milk
8 oz. cream cheese
Graham cracker crust (store bought)
whipped topping

Soften the cream cheese and mix in the sweetened condensed milk, then the key lime juice.  Pour into the graham cracker crust and chill at least 2 hours but preferably over night.  Top with whipped topping just before serving.