Preheat oven to 350°F (325°F for convect oven).
Grease and line pans with parchment paper.
Beat butter and sugar until fluffy (about 5 mins).
Blend eggs in a separate bowl.
Mix in vanilla, sour cream, and egg mixture.
Gradually add flour mixture, mixing until just combined.
Fold in chopped candied cherries.
Divide batter into pans, bake for 25 mins, then cool before decorating.
Mix butter until fluffy (5-8 mins).
Add vanilla and mix.
Gradually add powdered sugar, mixing until smooth.
Mix in cherry juice until desired consistency.
Store frosting at room temperature until ready to use.