Paris Hilton and Ashley Benson are just two of many Hollywood celebrities mourning the untimely passing of makeup artist Jake Bailey. Bailey was discovered by his assistant on Friday, dead from what is believed to have been suicide by carbon monoxide poisoning. An official cause of death hasn’t been determined, and is pending completion of an autopsy.

Paris Hilton, like many celebrities who knew and loved Jake Bailey, took to social media to share her grief.

“So sad, shocked & devastated to hear about @ByJakeBailey.? He was such an amazing person, an incredibly talented makeup artIst & friend. He was my makeup artist for the past 15 years. We travelled the world together, worked on so many beautiful projects & shared so many memories. Will miss him so much? My thoughts & prayers go out to all his family & loved ones. Heaven has a new angel. ?? #RIPJakeBailey ??” she captioned a photo of herself and other with Bailey.

A photo posted by Paris Hilton (@parishilton) on Oct 23, 2015 at 4:36pm PDT

Ashley Benson just saw Jake Bailey a week ago. Like Paris Hilton, she shared an Instagram post of herself with the late makeup artist.

“Honestly can’t believe this. Was just with you last week. My sweet angel. #rip @byjakebailey you’ll be terribly missed,” she captioned it.

A photo posted by Ashley Benson (@itsashbenzo) on Oct 23, 2015 at 3:26pm PDT

In addition to Paris Hilton and Ashley Benson, celebs including Octavia Spencer, Maria Menounos, and more shared their heartache over this untimely loss.

is this RIP Jake Bailey real. Oh no! please tell me it's a twitter hoax.

— octavia spencer (@octaviaspencer) October 23, 2015

My thoughts and prayers are with those who knew and loved #JakeBailey.

— octavia spencer (@octaviaspencer) October 23, 2015

Shocked&saddened that we lost @byjakebailey he's been doing my makeup for 10yrs!here on covershoot 4 @REDBOOK ugh pic.twitter.com/dNrGV0I8Pm

— maria menounos (@mariamenounos) October 23, 2015

I am gutted to hear of my friend Jake's passing. I saw him on Sunday, we flew together on a plane. He made me laugh as always. @ByJakeBailey

— Emmy Rossum (@emmyrossum) October 23, 2015

I will miss his sense of humor, talent and kindness.

— Emmy Rossum (@emmyrossum) October 23, 2015

If there are angels in heaven, they just got a little prettier… because Jake is up there painting their faces… putting lashes on them…

— Emmy Rossum (@emmyrossum) October 23, 2015

It’s abundantly clear that Paris Hilton, Ashley Benson, Emmy Rossum, and a bevy of Hollywood stars are grieving not just the loss of a talented makeup artist, but the loss of a man they called their friend.