Paris Hilton and a number of members of the Real Housewives franchise have taken to social media out of mourning.
They are all paying respects to Monty Brinson, the ex-husband of Kim Richards who died of cancer at the age of 58 this weekend.
According to People Magazine insiders, Richards is "devastated" by the passing of Brinson, who she may have divorced back in 1988, but who remained a close influence in her life for many years thereafter.
Paris Hilton, meanwhile, knew Brinson well because her father is Monty's ex-brother-in-law.
And the hotel heiress had the following to say on Instagram, writing this message along with the above photo montage:
"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.
"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."
Richards' former Real Housewives of Beverly Hills costar Camille Grammer also sent her sympathy via Twitter, linking to news of Brinson's death and writing:
"So sad Lovely man with a kind heart. My condolences to Kim and his family."
Brinson was married to Richards from 1985 to 1988.
A year after they married, the two welcomed their daughter, Brooke. She is now 29 years old.
"My father fought till the very end and never gave up. He was surrounded by everyone he loved and went peacefully," Brooke wrote on Instagram, concluding:
"Today is bittersweet knowing that he is at peace and doesn't have to fight this horrible disease anymore. Thank you everyone for your kind words."