Celebrities Channel Met Gala Glam at Beverly Hills House Party.

Katy Perry, Austin Butler, and Sia attended a star-studded house party at investor Michael Kives' $14 million Beverly Hills estate to celebrate the start of Milken Conference. The guest list included Oprah, Kris Jenner, Jeff Bezos, Arnold Schwarzenegger, and Larry David, among others. The party had a Met Gala vibe, and most of the celebs walked out with SKIMS gift bags.