The former reality star captioned the pic with a rather long note... and we're thinking you should get the tissues ready before you read it.
"Yesterday I said goodbye to best the friend I've ever had in my life.. Monty was an amazing person with an amazing soul ... We shared over 30 years of Love & Happiness and brought a beautiful daughter into world. I am so grateful for all that we shared. I know we will be together again one day I love you Monty my angel in heaven .. and I know that we be together again one day. I will carry you in my heart always my love...until then, may you rest in peace."
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Kim Richards' ex-husband Monty Brinson has died after a long battle with cancer, reported People. He was 58.
A source told the magazine that the former Real Housewives of Beverly Hills star is "devastated."
A photo posted by Kim Richards (@kimrichards11) on
Although divorced for over 25 years, the former couple remained good friends and even appeared on the Bravo series together. His battle with lung cancer was briefly touched upon during the show's fifth season.
Some of Kim's family have sent their heartfelt condolences by posting tender notes on Instagram.
Kim's niece Paris Hilton shared a collage of images of Brinson with the caption:"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."