Joe Jonas Surprises Guests by Joining Brother Nick Jonas Onstage at the 30th annual AmfAR Gala in Cannes

Joe and Nick Jonas on stage at AMfar Cannes.

The brothers performed Joe Jonas’ band DNCE’s song "Cake By The Ocean" at the 30th annual amfAR Gala on Thursday, May 23

Joe Jonas is having a blast in Cannes and giving fans a surprise!

On Thursday, May 23, the singer, 34, delighted the audience when he took to the stage to join his younger brother Nick Jonas, 31, at the 30th annual amfAR Gala.

While Nick was scheduled to perform at the event, the addition of the second Jonas Brothers member for a performance of Joe’s band DNCE’s song “Cake By The Ocean," was a fun additional surprise for guests.

In a video shared by Diplo on Instagram, Nick could be heard saying, "Joe, where you at?" as Joe, wearing a white suit, took a microphone from what appeared to be Diplo's hand and walked toward the stage.

"Ladies and gentleman, give it up for Joe Jonas!" Nick added as his brother joined him.

Playing the guitar and singing background vocals, Nick, who wore a cream suit jacket, white shirt and black pants, followed his elder brother’s lead as Joe walked up and down the stage while performing.

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The pair also walked across the stage together as the audience stood up for the moment, clapping and recording the show on their phones.

“This looks exactly like a Jonas Brothers concert,” Nick said while the crowd danced and sang along.

Ahead of Joe’s entrance, Nick performed his 2014 hit “Jealous,” as well as Frankie Valli’s song “Can't Take My Eyes Off You.”

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Sharing a snap on his Instagram Stories before the show, the “Close” artist held up a red card that read “Chopard and Red Sea International Film Festival Present,” in capital letters.

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The card then added, “Featuring a special musical moment with Cher,” “Performance by Nick Jonas,” and “Hosted by Demi Moore.”

Meanwhile, ahead of his surprise performance, Joe shared a video on his Instagram Stories of Nick looking out from a window from Hotel du Cap-Eden-Roc.

The Camp Rock star also shared a snap of himself dressed in a white suit alongside DJ and music producer Diplo.

Updating fans with clips of his performance, Joe then reposted a video of the moment he was invited to join the stage, as well as a clip of actress and host of the night Moore, 61, dancing along to “Cake By The Ocean” during the night.

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