Creamy Chocolate Mousse Cheesecake (No Bake)

In a medium bowl, whip together cream cheese and confectioners' sugar until light and smooth.
In a large bowl, prepare chocolate mousse mix with milk, as directed on package.
Gently fold cream cheese mixture into mousse, until mixture is no longer streaky.
Sprinkle the bottom of pie crust with some of the chocolate chips, if using.
Spoon mousse mixture into pie crust and decorate with remaining chocolate chips.
Refrigerate for 2 hours before serving.
Store in refrigerator.