Divide the jello between 6 six ounce glasses

Place in refrigerator until completely set then make orange jello

Dissolve orange jello in 1 cup of boiling water and stir until dissolved then add ½ cup cold water

When jello is room temperature, divide the jello between the 6 glasses by pouring the mixture carefully then place in refrigerator until completely set

To make the white layer bring the milk to a boil then add the sugar until dissolved and remove from stove.

In ¼ cup cold water dissolve the Knox gelatin and add to the mixture

Add the vanilla and sour cream and beat well with a mixer.

When mixture is room temperature, top off the jello cups (note: You will have some white mixture left over)

When completely firm top with whipped cream and sprinkles if desired