Bravo Insider Exclusive!

Create a free profile to get unlimited access to exclusive videos, sweepstakes, and more!

Kim Richards' Ex-Husband Monty Brinson Has Died

The #RHOBH regular lost his battle with cancer at age 58.

By Laura Rosenfeld Jan 25, 2016, 10:29 AM ET

Monty Brinson, the ex-husband of The Real Housewives of Beverly Hills' Kim Richards, has died after a long battle with cancer, a source confirmed to PEOPLE. He was 58 years old.

How to Watch

Watch The Real Housewives of Beverly Hills on Bravo Tuesdays at 8/7c and next day on Peacock. Catch up on the Bravo App.

Rick Hilton, the husband of Kim's sister Kathy Hilton, posted a touching Instagram message announcing Monty's death on Sunday, January 24. "We have lost Monty Brinson after a brave battle with cancer. His heart was [as] big as the moon and he was loved by all he Met," Rick wrote. "He will be sorely missed. I love You always!"

We have lost Monty Brinson after a brave battle with cancer. His heart was a big as the moon and he was loved by all he Met. He will be sorely missed. I love You always!
A photo posted by Rick Hilton (@rickhilton7) on Jan 24, 2016 at 6:30pm PST

Kim and Monty were married from 1985 to 1988. They have one daughter together, Brooke, now 29 years old, who was married last May.

Since their divorce in 1988, Kim and Monty have remained close with the RHOBH mom taking care of her ex-husband throughout his battle with lung cancer.

Friday night... Catching up on our favorite shows ððº I loveâ¤ï¸this guy! @montybrinson
A photo posted by Kim Richards (@kimrichards11) on Oct 17, 2015 at 12:20am PDT

Having you here Monty â¤ï¸ is the best gift of all....ðð» I love you so much @montybrinson
A photo posted by Kim Richards (@kimrichards11) on Sep 21, 2015 at 5:33pm PDT

Beautiful day today with loved ones. @kimrichards11 and I playing footsie before I prepare for one more treatment today and tomorrow then it will be gone. I always said don't ever give up and keep fighting for your loved ones you need them and they need you. I said my second round was going to be a breeze, just a little set back. So everyone out there no matter what you're going through you can win the battle with pure love and faith. And for myself it's been a great journey in my life to understand what other people have gone through it. I don't wish it upon anyone but I've been blessed with this journey. I've felt love from all over the world and it's made my heart stronger then ever before. So I like to thank God for letting me experience this journey and hopefully it will help others through my experience to live life with love, and my heart goes out to people who live in hatred, life is a gift. The last words you should always say to your family friends and strangers you love them and if something suddenly happens they will always remember the last three words you said to them. The last three words my father said to me was I love you before he passed away suddenly by a mistake at the hospital. Wishing everyone a wonderful week to all may each of your days be blessed even though the tough times.
A photo posted by Monty Brinson (@montybrinson) on Nov 17, 2015 at 1:58pm PST

Shortly before Monty's death, Kim took to Twitter to thank her fans for their support during this difficult time. "Hi Everyone...I've missed U all," Kim tweeted on January 22. "Thank you for all the Love and Prayers for Monty! Your messages touch my heart."

Hi Everyone...ðð«I've missed U all.. Thank you for all the Loveâ¤ï¸ and Prayersðð» for Monty! Your messages touch my heart â¤ï¸ XO KIMâ¤ï¸ð¢ð¥
— Kim Richards (@KimRichards11) January 22, 2016

Monty also stood by Kim during her time in rehab and arrests last year. "One day the people that didn't believe in you will tell everyone how they met you. That quote is in honor of @kimrichards11 all I will say at this time besides being best friends, and personally a person who has a great heart is thankful to all her fans and friends for believing in her," he wrote in the caption to a throwback photo of the couple posted on Instagram last year. "Without going into detail 90 per-cent of what you read is completely false. But for her fans that have stayed with her through this roller coaster will see her very soon at what she's done best all her life since the age of 4. I'm excited for her. And personally I would like to thank everyone who stood by her through this rough time. Remember everyone in life goes through a rough time one way or another. I always say know the facts before being judgmental."

One day the people that didn't believe in you will tell everyone how they met you. That quote is in honor of @kimrichards11 all I will say at this time besides being best friends, and personally a person who has a great heart is thankful to all her fans and friends for believing in her. Personally I have not seen her but we speak everyday. Do I know everything absolutely. Do I take up for my family and friends absolutely. Do I say it like it is. Absolutely. Is my heart filled with love for everyone absolutely. Without going into detail 90 per-cent of what you read is completely false. But for her fans that have stayed with her through this roller coaster will see her very soon at what she's done best all her life since the age of 4. I'm excited for her. And personally I would like to thank everyone who stood by her through this rough time. Remember everyone in life goes through a rough time one way or another. I always say know the facts before being judgmental #life #love #heart #thankful #blessed #rhobh #friends #family #heart
A photo posted by Monty Brinson (@montybrinson) on Aug 17, 2015 at 2:17pm PDT

With his many inspirational Instagram posts, it looks like Monty was a fighter right up until the end. "I'd I'd like to thank all the the people who have crossed my path," Monty wrote in one of his final Instagram posts. "You've all touched my heart may everyone have a blessed night and much love to everyone."

I just got a sign from God, with all the fight and love inside me he's going to keep me down here for awhile so I can win this battle so I can watch over my loved ones and take care of them, I'm going to be stronger than ever and over come this. Too much love inside me to give up #embrace #love #daughters #exeivrs #faith #life #thankful #blessed #tomorrow #family #heaven #god #friends #strangers and I'd I'd like to thank all the the people who have crossed my path you've all touched my heart may everyone have a blessed night and much love to everyone sweet dreams Monty
A video posted by Monty Brinson (@montybrinson) on Jan 20, 2016 at 11:23pm PST

UPDATE: Kim's niece Paris Hilton also shared her condolences on Instagram Monday. "Heartbroken to hear the sad news of my Uncle @MontyBrinson's passing after his long brave battle with cancer," Paris wrote. "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. My thoughts & prayers are with @BrookeWiederhorn @KimRichards11 & his family. #RIPMontyBrinson."

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. ð¢ My thoughts & prayers are with @BrookeWiederhorn @KimRichards11 & his family. ðð» #RIPMontyBrinson
A photo posted by Paris Hilton (@parishilton) on Jan 25, 2016 at 6:50am PST

Kim's sister Kyle Richards has also showed her love for Monty on Instagram Monday. "We love you @montybrinson you will be missed dearly," Kyle wrote in a post that featured several pics of her former brother-in-law throughout the years. "The kindest, gentlest soul who inspired so many with his positive attitude throughout his battle with cancer. May you rest in peace now."

We love you @montybrinson you will be missed dearly. â¤ï¸ The kindest , gentlest soul who inspired so many with his positive attitude throughout his battle with cancer â¤ï¸ May you rest in peace now...
A photo posted by Kyle Richards Umansky (@kylerichards18) on Jan 25, 2016 at 1:35pm PST

See photos of Kim throughout the years, below.