Demi Lovato Works Edgy Low-Cut Dress as Wilmer Valderrama & Joe Jonas Sing Along at Her iHeartRadio Show

Demi Lovato‘s concert events don’t seem to be just performances, they’re events!

Such used to be the case Friday night when the “Assured” crooner arrived on-stage to perform at the iHeartRadio Music Competition on the MGM Grand in Las Vegas.

Wearing an edgy, sheer bodysuit with knee-high boots and a furry jacket, the 23-year-previous bought the group on their feet when she carried out her hits together with “Cool for the Summer Season” and “Heart Attack.”

What got lovers further excited, on the other hand, used to be when cameras caught boyfriend Wilmer Valderrama, ex-boyfriend Joe Jonas and great buddy Nick Jonas assisting their lady collectively in the target market. The Fellows had been even caught rocking out to “Really Don’t Care.”

PHOTOGRAPHS: Demi Lovato’s very best seems 

The Most Important shock of the evening, on the other hand, could have come when Lovato invited Third Eye Blind lead singer Stephan Jenkins on-stage for a surprise collaboration of the ‘90s hit “Jumper.”

“Everybody give it up for the unbelievable Stephan Jenkins,” she advised the gang before sharing a hug with the rock megastar.

Friday night time handiest marked the start for the 2-day Pageant. Jennifer Lopez, Blake Shelton and others are scheduled to perform Saturday evening. In Fact, fanatics can watch the concert adventure in a two-night time different on The CW Sept. 29 and 30.

PHOTOGRAPHS: Celebration percent in and round Las Vegas 

As for Demi, she was back on stage Saturday afternoon performing on the iHeartRadio Track Village after an evening that saw her face-to-face with Diddy, Lil Wayne and numerous others.

“Diddy & Weezy sandwich,” she wrote on Instagram over the weekend. “#legitsquadgoals #legends #iheartradio.”