JAY-Z and Beyoncé didn't need to attend the Academy Awards ceremony in order to draw the biggest stars to their annual and super-exclusive after-party. This year, the theme was Houston and Brooklyn, to reflect the hosts' hometowns. According to reports, "it wasn't overly extravagant and it seemed like they wanted everyone to feel casual." But while the theme was low-key, the guest list was anything but.

According to E! Online and a handful of eagle-eyed fans on Twitter, attendees included Travis Scott, Kylie Jenner, Kim Kardashian, Kanye West, Rihanna, Solange, Diddy, and even Paul Rudd attended the event, which was held at the Chateau Marmont in Los Angeles.

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after party ♥️

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Beyoncé reportedly sang part of a track from The Lion King soundtrack, "Brown Skin Girl," and Jay-Z rapped along to "I Just Wanna Love You." However, as all guests apparently had to sign NDAs before attending the party, other knowledge of what went down is minimal.

Natalie Portman, Reese Witherspoon,  Khloe Kardashian, and Kourtney Kardashian were also there. And based on comments on Witherspoon's Instagram post, Gabrielle Union, Mindy Kaling, and Kate Hudson were too.

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