Why not celebrate the start of filming on "It 2" with a little cheese?

Filming commenced yesterday on the sequel to the hit horror movie and star James McAvoy marked the occasion with an Instagram post that included a cheesy pun in the caption. McAvoy, who plays the adult version of Bill Denbrough, posted an image of a wedge of cheese and referenced "dairy" and Derry, the town in Maine where the movie is set.

Day 1 on IT 2. Glad you got the memo guys. #passthecheeseplease #derryordairy

A post shared by James Mcavoy (@jamesmcavoyrealdeal) on

The sequel brings back director Andy Muschietti but fast-forwards 27 years, so the members of the Losers Club are all now adults. In addition to McAvoy as grown-up Bill, the cast includes Jessica Chastain as Beverly Marsh, Bill Hader as Richie Tozier, James Ransone as Eddie Kaspbrak, Isaiah Mustafa as Mike Hanlon, and Jay Ryan as Ben Hanscom.

The young stars of "IT" are expected to also appear in flashback scenes, and of course, Bill Skarsgard returns as the menacing Pennywise.

"It 2" opens in theaters September 6, 2019.