Hugh Jackman was caught sneaking into a cinema hall that was screening of his latest release, "The Greatest Showman".
The 49-year-old star took to Twitter to post his video in which he could be seen singing and dancing to his own songs from the musical, until he was noticed by the audience.
"Wanted to experience the singalong too! So I snuck in the back of the theatre. Then I got busted," Jackman captioned the clip.
The "Logan" star features alongside Zac Efron in the Michael Gracey-directed musical film, which released last year.
"The Greatest Showman" also stars Michelle Williams and Zendaya, and follows the true story of P T Barnum, an American showman, remembered for promoting celebrated hoaxes and for founding the Barnum & Bailey Circus.