K Pop band BTS has been rocking the Las Vegas musical scene with their performance.

BTS ARMY went crazy on the very 1st day when Jungkook pulled up his shirt to flaunt his abs

One of the BTS fans at the concert was seen holding a Placard of Jungkook bare body from a previous concert

On his fans' request, he pulled up his shirt to reveal his perfect abs on stage

The other team mates couldn't stop laughing after seeing Jungkook's spontaneous act.

The BTS next performance will be in Los Angeles from May 4