Jennifer Lopez

Jeff Kravitz/FilmMagic

Hot damn, J.Lo!

Jennifer Lopez sizzled onstage at the 2015 iHeartRadio Music Festival in Las Vegas on Saturday with a super sexy look—a short sleeve, flattering white geometric cut-out Bao Tranchi bodysuit that hugged her slim figure...and was cut high enough in the back to highlight her most famous asset. She paired the look with a cropped, short sleeve white jacket with her nickname written on the back.

At the iHeartRadio Music Festival, the 46-year-old pop star and American Idol judge performed the songs "On the Floor," "Jenny From the Block," "Booty" and "El Mismo Sol, a duet she sang with Spanish singer Alvaro Soler.

Jennifer Lopez

Jeff Kravitz/FilmMagic

Jennifer Lopez

Ethan Miller/Getty Images Entertainment

She later changed into a black, semi-sheer Eloise Bodysuit by House of CB and appeared backstage with on-again, off-again beau Casper Smart, 28.

Jennifer Lopez

Mindy Small/FilmMagic

Jennifer Lopez, Casper Smart

Kevin Mazur/WireImage

She was also spotted wearing a white ensemble with a plunging neckline, reminiscent of her famous 2000 Grammys dress, while headed to the Chateau Nightclub & Rooftop at the Paris Las Vegas Hotel & Casino for her concert residency launch party.

Jennifer Lopez

Gabe Ginsberg/Getty Images for Chateau Nightclub & Rooftop

That's right, J.Lo is coming back to Sin City for more.

In May, J.Lo had said she would begin a residency at the Planet Hollywood Hotel & Casino on Jan. 20, 2016 but gave no further details. At the iHeartRadio Music Festival, she revealed her show is called All I Have. Artwork for the show was also revealed, showing the singer in another super sexy, jeweled outfit.

Jennifer Lopez, All I Have Las Vegas Concert Residency Artwork

Planet Hollywood Hotel & Casino

 "I know no matter what the show is, what I'm gonna do every single night, whoever comes, I will be giving you all I have," she told the crowd. "That's gonna be the name of the show and I can't wait to see all of you there!"

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