Celebrity Name: Claire Holt
Brand Name: Saint Sirène
Deal Type: Brand Co-Founder / Launch
Announced: April 9, 2026
Impact: Holt’s first foray into fashion entrepreneurship, entering the competitive wardrobe-essentials market with a quality-first, consumer-pain-point approach
- Claire Holt co-founded Saint Sirène alongside friend Madeline Simmer, marking the Australian actress’s debut as a fashion entrepreneur.
- The brand launches with three white T-shirt silhouettes: The Best Friend, The Boyfriend, and The Girlfriend, each priced at $78 and designed to solve the elusive “perfect white tee” problem.
- A year in the making, the line was born after Holt polled friends and Instagram followers and found no single brand dominated the white T-shirt space.
- Expansion is already on the horizon, with Holt and Simmer signaling plans to target other everyday fashion pain points beyond the T-shirt category.
Claire Holt, best known for her role as Rebekah Mikaelson on The Vampire Diaries and its spin-off The Originals, has stepped into the fashion world with the launch of Saint Sirène, her first-ever fashion brand, co-founded with her friend Madeline Simmer.
The brand debuts with three takes on the classic white T-shirt: The Best Friend – a crisp, form-fitting style made from premium cotton; The Boyfriend – an oversized, vintage-jersey feel; and The Girlfriend – a cropped hem with a subtle A-line cut.
The idea came straight from a frustration Holt knew personally. After going through her own closet and polling friends, and then her Instagram followers, she found no single brand had cracked the code on the perfect white tee. That gap sparked the idea for Saint Sirène.
Much like how Sabrina Carpenter turned a personal passion into a product with her Sweet Tooth Bite-Size Mini Perfume Collection, Holt is betting that the most authentic brands start with a founder’s genuine need.
The process took a full year, with priorities including color, wearability, stain-resistance, coverage, and accessibility. Holt originally planned to launch with just one silhouette but quickly realized there’s no single shirt that works for everyone, which led to the three-cut lineup.
The move echoes the celebrity-to-entrepreneur playbook seen across industries: WNBA star Lexie Hull similarly translated personal conviction into her beauty brand Forta, proving that athlete and celebrity-led brands resonate when they feel personal.
Takeaways
The Saint Sirène launch is a masterclass in problem-led branding. Rather than slapping a celebrity name on an existing product, Holt and Simmer spent a year genuinely solving a problem, and that story is the marketing. In a market flooded with “premium basics” brands, authentic founder origin stories cut through the noise.
The $78 price point also threads the needle between fast fashion and luxury, targeting a sweet spot that fans of The Vampire Diaries star, many now in their late 20s and 30s, can comfortably spend on a wardrobe staple.
Do you trust celebrity-founded fashion brands more than traditional labels? Would you rather try a celeb’s clothing line, fragrance, or beauty brand first?
