When people search for Cash Warren or explore his family background, one name that sometimes surfaces is his sister, Koa Warren. She is a quieter figure in a notably creative family — not a celebrity in the traditional sense, but someone with her own artistic identity and a documented public moment worth knowing about.
This article covers who Koa Warren is, her confirmed family relationships, her work as a visual artist, and the 2022 father-daughter exhibition she shared with her father, Michael Warren. It also explains why reliable public information about her is limited, and why that is worth respecting.
Who Koa Warren Is
Koa Warren is the daughter of actor and visual artist Michael Warren — whose full name is Lloyd Michael Warren — and Sue Narramore. She is the sister of film producer Cash Warren, who is widely recognized as the husband of actress Jessica Alba.
Koa is not a public figure in the usual celebrity sense. Her name appears in a handful of specific, documented contexts: a social media post from her father, an art exhibition listing, a stock photo caption, and a passing reference from her brother. Outside of those, she keeps a low public profile.
It is also worth noting that the surname Warren appears across many unrelated genealogical lines — including historical figures connected to the Mayflower and various English ancestry threads. Koa Warren has no confirmed connection to any of those separate Warren family histories. The focus here is strictly on her immediate family branch.
Her Father, Michael Warren, and His Career in Acting and Art
Michael Warren is best known as an actor. He built a solid television career over several decades, with one of his most recognized roles being in the long-running series Hill Street Blues. He remained a familiar face in American television for many years.
What became more visible in the early 2020s was another side of Michael Warren — his identity as a visual artist. While acting had always been his primary public role, he had developed a serious practice in fine art alongside it. This artistic path is directly relevant to understanding Koa, because it eventually brought the two of them into a shared public space.
On social media, Michael Warren referred to Koa as his “oldest daughter” in a post announcing their joint art exhibition. That post is one of the few pieces of confirmed public information about Koa, and it tells us two things clearly: she is his eldest daughter, and she is a painter.
The “A Family Affaire” Father-Daughter Art Exhibition
The clearest and most well-documented public event involving Koa Warren took place on May 26, 2022. On that date, Michael Warren and Koa Warren exhibited their artwork together at the Ebell of Los Angeles, also referenced as the Ebell Theater.
The exhibition was titled “A Family Affaire” — a deliberate nod to the father-daughter nature of the show. Both artists brought their work into the same space and presented it together as a collaborative event.
Michael Warren’s own Instagram post confirmed the details. He announced that he and his “oldest daughter, Koa” would be showing their work at the Ebell Theater on that date, and he specifically described her as a painter. That post serves as a primary, firsthand confirmation of Koa’s role as a working artist.
A YouTube video description of the event also independently names both “Artists Michael Warren and Koa Warren (daughter)” as exhibitors at the Ebell of Los Angeles on May 26, 2022. This lines up exactly with Michael Warren’s own announcement, giving the event two separate documented confirmations.
A third piece of documentation comes from a stock photo caption on Alamy, which describes Cash Warren attending the exhibition alongside “his sister Koa Warren” at the “A Family Affaire” father-daughter art exhibition. So not only was the event real and well-attended, but Cash Warren was present to support his father and sister.
Taken together — the Instagram post, the YouTube event description, and the photo caption — these three independent sources give a clear, reliable picture of what the exhibition was and who was involved. It represents the most concrete snapshot available of Koa Warren as a working artist in a public setting.
Koa’s Place in the Warren Family
Koa and Cash Warren share the same parents: Michael Warren and Sue Narramore. That connection is consistently reflected across the sources available, from genealogy summaries to social media posts from both Cash and Michael.
Cash Warren has publicly acknowledged his sister. On Instagram, he referenced “my sister Koa” in a post where he mentioned her sending him a photo of their father. It is a small, personal detail, but it confirms the sibling bond in Cash’s own words.
Michael Warren has children from other relationships as well. However, the confirmed family branch connecting Koa, Cash, Michael, and Sue Narramore is the one most consistently documented in entertainment and genealogy sources. This article stays focused on that branch to avoid confusion or speculation about other family members not clearly tied to Koa.
In many ways, the Warren family across this branch reflects a pattern of creativity moving through generations in different forms. Michael pursued acting and then fine art. Cash built a career in film production. Koa found her path in painting. None of these overlap in an obvious way, yet they all trace back to the same family roots.
For readers who arrive at Koa’s name through curiosity about Jessica Alba’s extended family, this context is useful. Koa is Cash Warren’s sister, which makes her Jessica Alba’s sister-in-law. But beyond that structural connection, Koa’s public identity stands on its own — as an artist who exhibited her work alongside her father at a documented Los Angeles exhibition in 2022.
Why Public Information About Koa Remains Limited
It is worth being straightforward about this: there is not a lot of public information about Koa Warren, and that appears to be intentional. She has not pursued a public career in entertainment, has not given interviews, and does not appear in the regular cycle of celebrity coverage.
There are no confirmed details in the public record about her age, where she lives, her educational background, or her personal relationships. This article does not speculate about any of those things, because doing so would go beyond what is actually known.
What is known is specific and meaningful: she is Michael Warren’s oldest daughter, Cash Warren’s sister, and a painter who showed her work publicly in 2022 at a father-daughter exhibition in Los Angeles. That is a complete and honest picture of what the public record supports.
For anyone researching the broader Warren family — whether out of curiosity about Cash Warren’s background, interest in Michael Warren’s artistic career, or general family-tree research — OpenBizMag covers profiles like this one with a focus on confirmed facts and careful sourcing.
A Creative Family, Seen Clearly
Koa Warren is not a household name, and she has not sought to become one. But within the context of her family, she represents something genuine: an artist who has quietly developed her own practice and shared it publicly, at least once, in a meaningful way.
The “A Family Affaire” exhibition at the Ebell of Los Angeles in May 2022 was not a large celebrity event. It was a father and his eldest daughter showing their paintings in the same room, with family present. That is a simple, human story — and it is well-documented enough to be told honestly.
For anyone who found their way here through a search about Cash Warren, Jessica Alba, or Michael Warren, the key takeaway is straightforward: Koa Warren is a painter, the oldest daughter of Michael Warren, and the sister of Cash Warren. She comes from a creative family and has pursued her own form of that creativity on her own terms.
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