Katy Perry, Robert Pattinson, Justin Bieber & More At ‘Part Of Me’ After Party

After Katy’s ‘Part of Me’ premiere in LA on June 26, A-list celebs headed to the exclusive after party at the Chateau Marmont hotel in LA — and Rob, Justin and Selena Gomez partied until the wee hours of the morning!

The Hollywood worlds are colliding! In these brand news pics, you can see Katy Perry and some of our favorite stars at her Part of Me after party. The Chateau Marmont is a favorite among celebs because it’s incredibly private and super swanky. We couldn’t believe our eyes when we saw Robert Pattinson, Justin Bieber, and Selena Gomez at the party!

The only one that appeared to be missing from the entourage was Kristen Stewart. We wonder if she managed to sneak by without getting her pic snapped! If not, we bet she was just super busy with something else.

Regardless it’s totally awesome that Katy is friends with HollywoodLife.com‘s favorite celebs!

Katy’s Part of Me movie hits theaters July 2!

— Chloe Melas

More Katy Perry Here:

1. Katy Perry’s Divorce Confession: I Felt Like I Was Going To Die

2. Katy Perry Uses New Video For ‘Wide Awake’ To Slam Russell Brand

3. Russell Brand: I Would Get Married Again — Diss To Katy Perry?

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