'Harry Potter' Stars Return to Hogwarts in Official HBO Max Reunion Poster

HBO Max on Thursday unveiled the official poster for the upcoming Harry Potter reunion special, titled Harry Potter 20th Anniversary: Return to Hogwarts.The poster sees stars Daniel Radcliffe, Rupert Grint and Emma Watson reunite in Hogwarts' decorated Great Hall, alongside a multitude of familiar faces from the franchise."A moment 20 years in the making," HBO Max captioned the poster on Instagram. "Harry Potter 20th Anniversary: #ReturnToHogwarts is streaming on HBO Max New Year's Day."View thi...