(Updated 11:30 a.m.) Whether you’re a child reading through the Harry Potter books for the first time or a reporter in your late 20s still waiting on a letter from Hogwarts, you’re invited to the Hooray for Books Harry Potter night.

The event is scheduled for 6:30-8 p.m. at Hooray for Books (1555 King Street) tomorrow (Thursday).

“The theme this year is the Triwizard Tournament, to celebrate the illustrated version of Harry Potter and the Goblet of Fire,” the store said on its Facebook page. “This event will include a costume contest (Durmstrang and Beauxbatons characters welcome), trivia, crafting owl origami bookmarks in honor of Hedwig, and more fun activities.”

The event page said it will also feature host knitter Tanis Gray, author of official knitting-companion book Harry Potter: Knitting Magic.

“The event is open to all Potterheads, young and old,” the page said.