Showing up in costume to these Halloween-season events at Brooklyn’s Green-Wood Cemetery will get you “boo-ted.”

The spooky spot is offering a series of $25 after-dark, guided graveyard walks in October and November — but has a strict no dress up policy.

“We know it’s Halloween season, but please do not arrive in costume,” reads the event invitation, first reported by Patch.

“Attendees in costume, face-paint, or masks will not be admitted.”

Coming in costume to the Halloween-season strolls was deemed inappropriate because Green-Wood is “an active cemetery,” a rep for the cemetery said in a statement.

“All of our events are created to educate and entertain those who participate, while maintaining a respectful environment,” the statement said.

During the rest of the year, the 478-acre Greenwood Heights burial plot hosts special events including: a Victorian-era circus, a burger cook-off and some concerts. Many revelers come to these outings dressed up.

A spokeswoman didn’t respond to additional questions about the costume ban.

The evening cemetery tours are scheduled for Oct. 18 and Oct. 19 — and at three different times on Oct. 31.

They will also be offered Nov. 1 through Nov. 3.