ZAC’S EFRON-T AND CENTER

Zac Efron (on tricycle), Hugh Jackman and Zendaya joined James Corden to shoot a clip promoting the lavish musical “The Greatest Showman.” Fox is planning holiday-themed events, including a sing-along at “Club Cumming” to celebrate the show. The bar there will be run by “Cabaret” star and bon vivant Alan

Cumming. “Showman” actress Keala Settle will visit on Monday.