KATHERINE HEIGL apologized for what some people thought was a disrespectful photo shoot she did in a cemetery.
She and her husband Josh Kelley went to visit the graves of Katherine's brother and grandparents in Buffalo, New York . . . and while they were there, they decided to have a little fun.
They posted shots of themselves goofing around other tombstones, and Katherine shot video of Josh walking with his arm around a "ghost".
After people complained, Katherine took down all the photos . . . although Josh didn't delete the ghost video.
Katherine posted two videos apologizing, saying she was trying to, quote, "find some moments of levity and humor" in the cemetery visit, but "didn't realize how inappropriate I was being."