Blend together the orange juice, ice cream, and orange zest until smooth. Pour into popsicle molds, but leave the top 1/4 empty.
Using a whisk or a stand mixer with a whisk attachment, whip the heavy whipping cream until soft peaks form. You don't want firm whipped cream, just firm enough that it won't too quickly seep into another liquid.
Spoon the whipped cream on top of the creamsicles, add popsicle sticks, and freeze overnight.