J.K. Rowling is in a very elite class of authors. The Harry Potter series might be the most recognizable franchise since Star Wars, selling more than 450 millions books and making $7 billion at the box office.

So just how nervous do you think the cast and crew of “Fantastic Beasts and Where to Find Them” were when the creator herself stepped foot on set? Rowling shared no details about what she saw, but knowing she’s keeping tabs on the new series should make fans happy.

Of course, Rowling COULD'VE been on set for her other work that is being adapted. “Harry Potter and the Cursed Child” is a West End stage play in two parts that’s currently in production. But this second tweet — combined with the old-timey skyline on her director's chair — seals the deal that she was on set for “Fantastic Beasts.”

“Fantastic Beasts” arrives in theaters in 2016.

Mom. Wife. Geek. Gamer. Feminist. Writer. Sarcastic. Succinct. Donna has been writing snark for the Internet in one form or another for almost a decade. She has a lot of opinions, mostly on science-fiction, fantasy, feminism, and Sailor Moon. Follow her on Twitter (@MildlyAmused) for more of all these things.