Crystal Light Lemonade Pie

1 graham cracker crust
8 ounces cream cheese
1/4 cup milk
1 container Crystal Light Lemonade mix
8 ounces Cool Whip

Mix cream cheese and milk until smooth. Add Crystal Light Lemonade mix. Blend well then add Cool Whip; blend well. Pour into crust. Chill for at least 3 to 4 hours.