Clementine Breen is an American ex-transgender activist. Breen gets money and attention making it harder for others to get gender affirming care.
Background
Kaya Clementine Breen was born in 2004. Breen was reportedly sexually assaulted by another student in first grade. After coming out as trans to a guidance counselor in middle school, Breen’s classmates were asked to write letters of support, which Breen found nice but uncomfortable.
Breen began puberty blockers under the care of Johanna Olson-Kennedy at age 12 and started cross-sex hormones at 13. Breen reexperienced sexual abuse for about four months around age 14. Breen reportedly underwent top surgery at 14.
Following a 2018 “Miscellaneous-Other (NAME CHANGE CRIMINAL HISTORY ASSESSMENT ); Filed by Probation Officer” filed on April 13, Breen’s name change to Finn Paul Breen was approved on August 21, 2018.
After undergoing dialectical behavior therapy (DBT), Breen went off testosterone in 2021 and made additional gender changes in 2024.
Ex-trans activism
In October 2024, Breen appeared in a video posted by anti-trans extremist Billboard Chris while visiting UCLA.
I just want to say you’re doing a good thing. I can’t believe people disagree with you on this. As a former child transitioner I am appalled that people have anything to question you about. I’ve been going off testosterone since 17 because it gave me psychosis. […] I don’t know how a child could consent to the loss of their fertility.
I was sexually abused as a child, and that was totally ignored. I started having a lot of negative feelings about my body around puberty. I was egged on by some guidance counselors that I might be transgender, and I later decided I was really a boy and my life would be so much easier because of all of this abuse I had experienced because of being a woman, and I totally just rejected womanhood because I thought that all that it meant for me was pain.
Getting out of it was a really difficult process for me. Mostly it was just getting the right therapy, and we never discussed my gender. We only discussed my sexual abuse. And after I dealt with that, I realized I didn’t want to do this anymore. The loss of my fertility really started to sink in, and I thought, “Oh my God, I built this entire persona around misogyny.”
Later in 2024, Breen filed a lawsuit via anti-trans lawyers Charles LiMandri and the firm Campbell Miller Payne. Breen and team gave the exclusive to anti-trans activist Jesse Singal.
Breen told Fox News:
As much as I would like financial reimbursement for the medical costs that this has caused me, I am mostly doing this because there is a lot of speculation online that this doesn’t happen, nobody’s fast-tracked into to this, and the lack of gatekeeping in this process is really absurd, and people like me fall through the cracks.
My parents were really resistant originally, and they were pretty strongly believing that I was not transgender. And they were told by my former doctor that I was at very high risk for suicide if they didn’t agree to the treatment. I was not suicidal at the time, and I only attempted suicide after being on testosterone.
[…] After actually having to process my trauma for the first time, I started thinking about my future and if I wanted to have children, and I couldn’t imagine myself as someone’s father.
I know tons of people that have detransitioned and tons of children that have transitioned even younger than me starting medical treatments. I grew up around lots of people through the clinic that I saw my doctor through, and seeing people dismiss it is really disheartening to me.
For me specifically, I wish I could have told myself that there is no right way to be female, and that if I hate myself for being female that doesn’t mean there’s something physically wrong with me that I need to buy a cure for.
I’m going through the process of reconstructive surgery right now, which has been really, really challenging for me, and sortt of deconstructing my whole identity and coming to terms with how much time I spent living as a whole different person has been really challenging. […] I hope there’s a good outcome from this.
Breen’s case was dismissed in October 2025. Following the dismissal, Breen told anti-trans writer Benjamin Ryan, “While it’s disappointing, I’m not surprised. My intent with filing the suit wasn’t necessarily to win but mostly to put my story out there.”
References
Contributing editor (November 11, 2025). Judge Grants Judgment in Favor of CHLA, Doctors in Gender Surgery Suit. MyNewsLA https://www.msn.com/en-us/health/other/judge-grants-judgment-in-favor-of-chla-doctors-in-gender-surgery-suit/ar-AA1QfLSj
Goldstein, Julie Rei (October 30, 3035). “More #DeTransLaw News! Clementine Breen’s lawsuit has now been Dismissed against Dr. Johanna Olson-Kennedy and the remaining Defendants. Trial Court found the 1st Amended Complaint still fails to overcome the statute of limitations. Breen’s legal team is expected to appeal.” https://x.com/JulieRei/status/1984018415892463683
Goldstein, Julie Rei (October 23, 2025). “Breaking #DeTransLaw News: Clementine Breen has filed an Appeal for the Dismissals that took place during the August 28th Hearing. This is likely in anticipation for the remaining Defendant’s Dismissal Hearing (including Dr. Johanna Olson-Kennedy) set to take place next week.” https://x.com/JulieRei/status/1981429478661533744
Goldstein, Julie Rei (August 29, 2025). “BREAKING #DeTransLaw NEWS: The first official Dismissals occurred yesterday in the Clementine Breen v. Olson-Kennedy case as the Amended Complaint still fails to overcome the statute of limitations. Hearing on Dismissals for the remaining Defendants is set for October 28th.” https://x.com/JulieRei/status/1961448524933206468
Goldstein, Julie Rei (June 19, 2025). “BREAKING #DETRANSLAW NEWS: On Tuesday’s Hearing in Breen v. Olson-Kennedy, the Judge concluded Clementine’s claim in time-barred. Her legal team sought leave to amend orally at the hearing, but she will be unable to disclaim certain allegations. This case is on life support.” https://x.com/JulieRei/status/1935815996310536673
Kaya Clementine Breen v. Johanna Olson-Kennedy et al. (December 5, 2024). https://www.transgendermap.com/wp-content/uploads/sites/7/2024/12/breen-v-olson-kennedy-2024.pdf
In re: Kaya Clementine Breen https://unicourt.com/case/ca-la23-kaya-clementine-breen-424152?init_S=csup_ltst
Coverage in anti-trans press
Ryan, Benjamin (November 5, 2025). Detransitioner Lawsuit Against Dr. Johanna Olson-Kennedy Is Dismissed. Hazard Ratio https://benryan.substack.com/p/detransitioner-lawsuit-against-dr
Center for American Liberty (May 27, 2025). Meet Chloe, Luka and Clementine: The Detransitioners Urging Federal Courts to Protect Vulnerable Minors. https://libertycenter.org/cases/meet-chloe-luka-and-clementine-the-detransitioners-urging-federal-courts-to-protect-vulnerable-minors/
Gallagher, Trace (December 10, 2024). Detransitioner explains decision to sue gender surgery doctor. Fox News https://www.foxnews.com/video/6365833434112
Lambert, Hannah Ray (December 9, 2024). UCLA student sues doctors, says she was ‘fast-tracked’ for gender transition at age 12. Fox News https://www.foxnews.com/media/ucla-student-sues-doctors-says-she-fast-tracked-gender-transition-age-12
Singal, Jesse (December 6, 2024). America’s best-known practitioner of youth gender medicine is being sued. The Economist https://www.economist.com/united-states/2024/12/06/americas-best-known-practitioner-of-youth-gender-medicine-is-being-sued
Media
Center for American Liberty (May 29, 2025). Woke Doctors MUTILATED Me at 14: Clementine’s Story. https://www.youtube.com/watch?v=i-HkZjOSxvw
Jordan B Peterson (March 20, 2025). Irreversible Damage at Fourteen | Detransitioner Clementine Breen | EP 531. https://www.youtube.com/watch?v=lKljKfHNOzw
Gender: A Wider Lens (Feb 7, 2025). Clementine Breen Sues Famous Gender Doctor, After Rushed Medical Transition | EP 204. https://www.youtube.com/watch?v=24tSBRA6I4k
Laura Ingraham (December 31, 2024). Detransitioner sues after alleging she was fast-tracked into surgery. Fox News https://www.youtube.com/watch?v=ZUARykK0yr8
Center for American Liberty (December 11, 2024). Children, Consent, and Controversy: Clementine’s Story. https://vimeo.com/1038350101
billboardchris (October 24, 2024), I’m at UCLA and I just met Clementine, who recently detransitioned. Instagram https://www.instagram.com/billboardchris/reel/DBbG1Z_O6tJ/
Resources
Instagram (instagram.com)
- finnbr33n [deleted]
YouTube (youtube.com)