Party Girl

The Party Girl is an NPC that will spawn once the following criteria have been met:
 * There is an empty house.
 * You like to party.

The Party Girl will sell you the Bubble Machine work station which allows you to make bubbles. She also sells the confetti gun and fireworks.

Trivia

 * The Party girl could quite possibly be a reference to Pinkie Pie, as they both are pink and are all about the party.