Cream sugar, butter, vanilla and egg until light and fluffy. Stir in remaining ingredients until dough forms. Place dough between 2 pieces of parchment paper and roll out to ¼" thickness and refrigerate 1 hour.

Preheat oven to 425 degrees. Place dough on lightly floured surface and cut dough with mask cookie cutter. Place on parchment lined cookie sheet.

Bake 6-8 minutes or until lightly browned and let cool.

To make the icing, beat egg whites and lemon with hand mixer. Reduce mixing speed to low and add powdered sugar until combined and smooth.

Separate into 4 bowls and color icing with purple, gold, green and black food coloring. Spread base coat of icing on cookie; use black icing to outline eyes and outside of the mask. Place dragees around mask and sprinkle with disco dust. Let icing set then place on platter for sharing!