Justin Timberlake has turned his back on his Sexyback after promising fans his performance of the smash-hit at his charity show in Las Vegas on Friday night was the last time he'll sing the song live.

The pop superstar hosted a star-studded benefit show at the Planet Hollywood Theater as part of his inaugural Shriners Hospitals for Children Open golf tournament week, and stunned fans with the news he's retiring his signature tune. The sell-out crowd gasped as Timberlake made the announcement before performing the song one last time.

That might have been the low point of his show, but there were plenty of highlights - Timberlake duetted with Maroon 5's Adam Levine and the two pals attempted to beat box with 50 Cent and the pop superstar also teamed up with Lionel Richie to belt out the Commodores' Easy. Timberlake also welcomed Leona Lewis, Rihanna and the Jonas Brothers onto the Planet Hollywood stage.

However not every aspect of the charity show went smoothly - security men dashed to eject the cast of musical Stomp when they made an unexpected appearance in the aisles of the venue.

One audience member tells WENN, "These guys just appeared after the Jonas Brothers performed, banging their dustbins, and security panicked and tried to eject them and their bins. But it was part of the show."

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(This news article provided by World Entertainment News Network)