Brinson appeared to be at peace with his terminal illness, according to Instagram posts he shared in the weeks prior to his death.
"I'm surrounded by love," Brinson wrote in a caption to a post shared earlier this month. "I got plenty of love in my heart. I'm here for everybody. This might be my final resting place but I'm content."
On Monday morning, Paris Hilton posted a photo collage in tribute of her uncle. "Heartbroken to hear the sad news of my Uncle @MontyBrinson's passing after his long brave battle with cancer. He was such an incredible man with such a huge heart," she wrote. "He was so insightful & positive about life, even with all he was going through. He always had a smile on his face & lit up the room with his positive energy & fun personality. He will be truly missed. ? My thoughts & prayers are with @BrookeWiederhorn @KimRichards11 & his family. ?? #RIPMontyBrinson."