Using a standing mixer combine the butter, powdered sugar, heavy whipping cream, vanilla, and mix on medium speed until combined and smooth
Scoop 1 ½ C of frosting into another bowl and set aside
Using the ice cream scooper, scoop out some frosting and place it onto the cupcakes
Using a mini angled spatula, lightly spread and smooth evenly into a thick mound of frosting
Dip the cupcake into the sprinkles to coat the frosting mound
Using the frosting that was set aside, divide the frosting into two bowls
Mix in red food coloring into one bowl
Mix in blue food coloring into the second bowl
Scoop the red frosting onto 1 side of the piping bag
Scoop the blue frosting onto the other side of the piping bag
Pipe a dollop onto the center of the cupcake
Place the Unicorn Horn and Ears from the icing package into the red and blue frosting