Other attendees at Sunday's show at the Mandalay Bay Resort and Casino were David Arquette, Allison Janney, Dule Hill, Ryan Kwanten, Alfre Woodard, Roberto Cavalli, Pharrell Williams, Dot Jones, Rex Lee, Ian Ziering, Jon Secada and Jennette McCurdy.
Jackson's mother, Katherine, sons Prince and Blanket, and brothers Jackie, Marlon and Tito also attended the event.
"Directed by Jamie King, this entirely new show is the second creative project to be developed between Cirque du Soleil and the estate of Michael Jackson after the top-grossing 'Michael Jackson the Immortal World Tour,' currently playing arenas in Asia as it travels the world," a news release said.
Michael Jackson, the Grammy Award-winning pop star, died June 25, 2009. He was 50.