Matt Irwin, One Direction's photographer and Harry Styles' close friend, has reportedly passed away. He was 36 years old. Directioners have been paying tribute to the celebrity photographer, trending the hashtag #RIPMattIrwin on Twitter, and offering their condolences.

If you're unfamiliar with his work, Matt has been photographing the boys for years.

You may recognize some of his shots from Hazza's profile pics.

He even calls the One Direction singer a "spud."

Our hearts go out to his friends and family.

Update: Celebrities like Harry's ex, Caroline Flack, have already started paying tribute.

Click through the galley to see photos of Matt with some of your favorite celebrities.