Mix the cake mix, eggs, oil, orange juice and orange zest. Beat on low speed for 30 second, then on medium speed for four minutes.
Fill cupcake liners about 2/3 to 3/4 full and bake according to package directions.
Allow to cool completely before frosting.
Spoon frosting into a bowl.
Add orange juice, orange zest and powdered sugar. Beat on medium speed for at least two minutes, until fluffy and smooth. Add more orange juice or powdered sugar as needed. (Beating the canned frosting is a great way to improve the consistency, even without the additional flavoring).