Reality star Morgan Stewart has revealed her brother has died “unexpectedly”.

Stewart, 36, known for the reality show Rich Kids of Beverly Hills, shared the sad news in an emotional post on social media.

Stewart revealed her brother Oliver died at the age of 45, shortly before his birthday, from “a random case of pneumonia”.

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She shared a flashback photograph of the pair together, which was in a silver frame, and wrote a touching tribute underneath.

“Last night, I very unexpectedly lost my older brother, Oliver. He was musical, creative, funny, and wickedly smart,” she wrote.

“He would have turned 46 on July 26th, and I was excited to be in Switzerland for it. He also struggled with the horrible disease that is schizophrenia.”

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“Ultimately, we lost him yesterday to a random case of pneumonia.”

“We were half-siblings, but [her mother] Susan never let us say that. She insisted that we were brother and sister, no matter what.”

She added in part of her post, “I didn’t think I could break. But today, I am broken.”

Underneath her followers commented their condolances and support underneath.

“Oh no, I am so sorry Morgan. Sending so much love,” The Hills star Whitney Port commented underneath. 

Australian actress and The Originals star Claire Holt added, “I am so so sorry for your loss.”

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Stewart is best known for the reality show Rich Kids of Beverly Hills, which ran from 2014 to 2016.

She is married to Jordan McGraw, the son of TV star Dr. Phil McGraw.

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