Preheat oven to 350 degrees. Grease and flour a bundt pan and set aside. I use Baker's Joy spray.
Zest the lime and lemon. Cut the lemon and lime in half and juice them, set aside.
Add the butter to a large bowl with the sugar cream together until light and fluffy, this will take about 2 minutes. Add the eggs one and a time and blend.
Add the flour slowly and blend unit just combined. Add the 7up, lemon juice, lime juice, and the zest to the batter. Blend until just combined.
Add the batter to the prepared bundt pan.
Place in the oven on the center rack and bake for 1-1.5 hours. Mine took exactly 1 hour and 15 minutes. Test with a toothpick, the toothpick should not have any wet batter on it.
When the cake is done let rest for about 10 minutes on a cooling rack. Flip the bundt pan onto a plate.
Make the glaze: In a small bowl add the powdered sugar, milk and the zests. Whisk until smooth. Drizzle over the warm cake. Serve and enjoy!
Video
Notes
Nutritional values are approximate. Please use your own calculations if you require a special diet. Values below are for 1/10 of the recipe.