Preheat your oven to 350 degrees
Vigorously whisk 8 tablespoons of room temperature butter with 1 cup of granulated sugar in a large bowl until pale in color and creamy
Add 2 eggs, 1 teaspoon of vanilla extract and 1/4 teaspoon of citrus extract and whisk to combine
Add 1/4 cup of whole milk and mix to combine
Add 1 1/2 cups of all purpose flour, 2 teaspoons of baking powder and 1/4 teaspoon of salt and mix until just combined
Gently whisk in 1 tablespoon of citrus zest, 1/4 cup of lime juice and 1/4 cup of clementine juice
Grease or line a cupcake tin and fill each cavity half way with batter
Bake the cupcakes in a 350 degree oven for 8-20 minutes (depending on the size of the cupcakes)
Transfer the cupcakes out of the tin directly onto a cooling rack to cool fully before frosting
Top with citrus buttercream frosting and decorate with fresh citrus zest or sprinkles (optional)
Store leftovers in an airtight container at room temperature