The Harry Potter HBO series cast is growing, including someone you already know from the movies!

Additional casting for the upcoming TV show was just revealed on Monday (September 1), and there are eight more stars being added to the cast.

The news was provided during “Back to Hogwarts Day, which happens every year on September 1, as fans join together for a global celebration of the stories, marking the iconic return to Hogwarts School of Witchcraft and Wizardry.

Click through to find out who is returning and who is joining…

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