When Olivia Wilde was delivered a strange envelope on stage during her presentation in front of a full Las Vegas audience, many felt it was the setup for an elaborate prank.

Instead, she was served with legal documents by her ex-partner, Jason Sudeikis.

“Is this for me?” wondered Wilde, who was interrupted while showing footage from her upcoming thriller “Don’t Worry Darling” at Warner Bros’ presentation at CinemaCon, the annual gathering of the movie theatre business.

“It’s all really strange. “I’m going to open it right now,” she remarked, taking out an envelope labelled “Personal and Confidential.” “after an unknown individual placed it casually onto the stage