Irwin died on May 5, according to The Hollywood Reporter Saturday.
A representative at Irwin's photo agency Camilla Lowther Management said in a statement, "It is with profound sadness that we announce the passing of British photographer, Matt Irwin. Matt's family and friends are heartbroken and have asked that their privacy be respected while they come to terms with their loss."
The statement continued, "Matt's unprecedented access to a generation of musicians, models, and actors of our time leaves behind a visual chronicle that reveals - and pays testament to - his infectious passion, enthusiasm and talent. Matt's passing leaves a huge gap in the fashion world and in the hearts of all those who had the privilege of knowing him."
He began his career in fashion, working at Dazed & Confused in London as the front sections editor, according to the CLM website.
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His career as a photographer launched when he was approached by Dazed creative director and friend Nicola Formichetti to shoot photographs for the magazine, eventually leading to his first cover in 2007.
Over the span of his career, Irwin photographed several celebrities, including Daisy Ridley, James Franco, Minaj, Kesha, Cara Delevingne, Miley Cyrus, Gwen Stefani, Allison Williams, James McAvoy, Lady Gaga, Rosie Huntington-Whiteley and Reese Witherspoon.
Following the news of his death, the photographer's famous friends and subjects took to social media to express their sorrow and condolences on his passing, including One Direction's Niall Horan, Rita Ora and Alexa Chung.
"Rest well Matt. Can't believe I'm writing this. Incredible person," wrote Horan and posted a picture of him with Irwin.
Ora also shared a photo of her with the photographer and captioned it by writing, "So talented. #RIPMattIrwin."
Model Chung posted, "Sorry to hear you left so soon. Will break out the summer shorts in your honour.