The Xavier School for Gifted Youngsters is about to get a bit more crowded.

That's because initial casting has begun on Bryan Singer's X-Men: Apocalypse film. The director took to Instagram this evening to post a shot of empty chairs, which will presumably soon be filled by actors looking for a spot in the next X-Men installment. As to which roles Singer is hoping to fill this weekend, he did not clarify.

"The glamorous casting process begins! #XmenApocalypse," Singer posted with the photo.

Loading Loading The glamorous casting process begins! #XmenApocalypse View on Instagram

X-Men: Apocalypse hits theaters May 27, 2016.