In a large mixing bowl, combine the sweetened condensed milk and lemon juice. Stir until well blended.
Add the drained crushed pineapple, shredded coconut, and chopped pecans to the bowl. Mix until evenly incorporated.
Gently fold in the whipped topping until the mixture is smooth and fluffy.
Spoon the filling into the graham cracker crust, spreading it evenly.
Refrigerate the pie for at least 4 hours or until firm.
Optional: Garnish with additional whipped topping, toasted coconut, or pecans before serving.
Slice, serve, and enjoy your Million Dollar Pie!