iHeartRadio's iHeart80s Party at the Forum Theater in Los Angeles on Saturday (Feb. 20) was very festive, happy, sexy and fun -- with Billy Idol singing his heart out, sweating, taking his shirt off and showing his incredible six-pack that would put any 20-year-old to shame -- until Kris Jenner showed up onstage to present Boy George's Culture Club.
As soon as Jenner walked onto the stage, the crowd booed her, and no one could hear what she said. The production crew attempted to push the volume of her mic up, but the audience got louder and louder -- and they didn't stop until she got off the stage.
Jenner, who was wearing a black hat in the style of Boy George's signature look, tried to keep her composure but seemed upset.
Icons of the '80s came together for the first-ever iHeart80s Party hosted by Martha Quinn, with live performances by Idol and Culture Club as well as Tears for Fears, Missing Persons, Rick Springfield, and Loverboy.
Elsewhere at the event: LL Cool J was in the audience with three bodyguards, but he was happy to pose for photos with fans and was even taking photos of the performances himself.
See video of Kris Jenner onstage at the iHeart80s party below.
Check out more from Kris Jenner in the gallery below!