It's a "fancy dress" party, in the non-British sense. Like just wear a fancy dress.
  1. Klara: A long-sleeve purple shirt with a picture of a girl ice skating, which is one half of an outfit, red-and-black polka dot leggings which are NOT the other half, pink and white Paw Patrol socks, an Ariel mermaid costume and pink Minnie Mouse Crocs
  2. Joanna: The top half of her Paw Patrol Christmas pajamas, a Sophia the First dress-up dress, Doc McStuffins socks and pink Disney Princess sneakers, one of which lights up
  3. #killingit