Sabrina: The Animated Series 1x17

When Sabrina hears Gem bragging about a Halloween party that she invited everyone in school, except Sabrina, to, Chloe talks Sabrina into hosting a party of her own, providing she can trick Uncle Quigley into leaving the house for the evening. When conventional plans tax her budget, Sabrina turns to magic to liven up the event, and everything goes wrong.