This year marks the 20th anniversary of the literary phenomenon, the J.K. Rowling's Harry Potter series, coming to the silver screen. The series and films moved the world, introduced words into the entire world's lexicon, and continue to be a bounty for source material for films and plays in the present day. It's no wonder that HBO Max has invited the world to the Harry Potter 20th Anniversary: Return to Hogwarts special where the cast will unite to discuss, celebrate and reminisce on the unique time in their lives when they were creating the magic. The gang's back together again in the new poster!

harry_potter_twentieth_anniversary_return_to_hogwarts_ver2_xlg

Returning cast members that have been announced include Daniel Radcliffe, Rupert Grint, Emma Watson, Helena Bonham Carter, Robbie Coltrane, Ralph Fiennes, Jason Isaacs, Gary Oldman, Tom Felton, James Phelps, Oliver Phelps, Mark Williams, Bonnie Wright, Alfred Enoch, Matthew Lewis and Evanna Lynch. If you missed the trailer for the event, start getting pumped! Here it is!

Emma Watson started celebrating and looking forward to being reunited with her fellow castmates last month, and took to Instagram to share the excitement and memories, saying: "Harry Potter was my home, my family, my world and Hermione (still is) my favorite fictional character of all time. I think a journalist once said it was irritating how many times during an interview I mentioned how lucky I was and started counting… BUT I DAMN WELL KNEW!!! And still know.

"I am proud not just of what we as a group contributed as actors to the franchise but also as the children that became young adults that walked that path. I look at my fellow cast members now and I am just so proud of who everyone has become as people. I am proud we were kind to each other that we supported one another and that we held up something meaningful.

"Thank you to the fans that have continued to show their support well after the last chapter closed. The magic of the world wouldn’t exist without you. Thank you for fighting to make it such an inclusive and loving place. I still miss the crew who made these films all the time. Thank you for all of your hard work too - I know your contributions sometimes get overlooked. Happy 20th Anniversary Potterheads! We hope you enjoy the Harry Potter 20th Anniversary: Return to Hogwarts which will stream New Year’s day, Jan. 1 on HBO Max. ⚡️ Lots to look forward to. 😊 E x"

"It has been an incredible journey since the debut of the Harry Potter and the Sorcerer's Stone film, and witnessing how it has evolved into this remarkable interconnected universe has been magical to say the least," said Tom Ascheim, President, Warner Bros. Global Kids, Young Adults and Classics, in the original announcement about the special back in November. "This retrospective is a tribute to everyone whose lives were touched by this cultural phenomenon-from the talented cast and crew who poured their heart and soul into this extraordinary film franchise to the passionate fans who continue to keep the Wizarding World spirit alive 20 years later."

harry_potter_twentieth_anniversary_return_to_hogwarts_xlg

Tune in and bring your wands for the Harry Potter 20th Anniversary: Return to Hogwarts on HBO Max New Year's Day.