Preheat the oven to 350°F (175°C) and line a muffin tin with cupcake liners.
In a large bowl, cream together the softened butter and sugar until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Stir in the vanilla extract.
In a separate bowl, whisk together the flour, baking powder, and salt.
Gradually add the dry ingredients to the wet mixture, alternating with the milk.
Mix until smooth, then add pink food coloring to achieve desired shade.
Fill each cupcake liner about 2/3 full with batter.
Bake for 18-20 minutes, or until a toothpick inserted comes out clean.
Allow to cool completely before frosting with buttercream.