Katy Perry, Orlando Bloom, Jennifer Aniston and Justin Theroux Attend Star-Studded Birthday Bash: Pics

The stars -- exes included! -- came out in full force to celebrate the 40th birthday of a close friend.

Exes Katy Perry and Orlando Bloom may have crossed paths Saturday night while celebrating the birthday of a mutual friend.

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The pop singer and her actor ex-boyfriend were photographed arriving separately to the Peppermint club in West Hollywood, California, both attending jewelry designer Jennifer Meyer's star-studded 40th birthday party.


Meyer, who separated in October from actor Tobey Maguire after nine years of marriage, had quite the guest list at her big bash, including Jennifer Aniston and husband Justin Theroux, who came with Aniston's BFF, Courtney Cox.


Gwyneth Paltrow was also present, who cozied up to her pals Demi Moore, Sara Foster and the birthday girl herself for a group photo.

"I went out on a Saturday night and lo and behold, some of my best girls had up and done the same," the Iron Man actress wrote on Instagram.

Moore, 54, looked particularly incredible in a flowy blue dress and a pair of chic glasses.

Roger / AKM-GSI

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Foster also added a pic, posing with Meyer and actress Kate Hudson.

Hudson, who celebrated her 38th birthday on Wednesday, had a joint party with Meyer and writer Derek Blasberg last year.

For more on Meyer's split from Maguire, watch the video below.