In an industry saturated with fast-fashion giants and fleeting micro-trends, building a brand that stands for something is a formidable challenge. Yet, for London-based sisters Ivana and Valentina Delarose, the founders of the eponymous London-based label The Delarose Sisters, the mission was clear from day one: to merge high-fashion design with uncompromising environmental ethics.
As the global swimwear market surges toward a projected valuation of $29 billion by 2026, according to recent reports from Printful, the competition is fiercer than ever. However, The Delarose Sisters have managed to cut through the noise, not by following trends, but by setting them. From their viral social media presence to their solar-powered production in Bali, the sisters have engineered a brand that resonates with a new generation of conscious consumers.
A Fusion of Heritage and Innovation
The Delarose Sisters Ltd. is a creative sisterhood rooted in a lifetime of shared inspiration. Ivana, the elder sister at 30, brings a sharp editorial eye to the brand. A respected fashion writer and contributor to publications such as Grazia, Cosmopolitan, and Esquire, she possesses an innate understanding of the media landscape. Meanwhile Valentina, 25, complements this with a degree from the prestigious Fashion Retail Academy in London and a background in styling that includes working alongside Gary James McQueen, nephew of the late British fashion designer, Alexander McQueen.
This unique blend of editorial insight and design technicality forms the backbone of their creative direction. “Marketing and PR are central to how we’ve built The Delarose Sisters because we understand that brand identity is as important as product,” the sisters explain. Their in-depth background allows them to define a clear visual and narrative direction across every touchpoint, ensuring that the brand feels cohesive whether viewed on a smartphone screen or in a high-end retail window.
The “Nostalgic But Bold” Aesthetic
The Delarose Sisters’ design philosophy is a study in contrasts. Their swimwear often mixes “Old Hollywood” glamour with contemporary, daring cut-outs. It is a style they describe as “nostalgic but bold, feminine but strong.”
Their digital presence reflects this duality. While many brands opt for hyper-polished, sterile imagery, The Delarose Sisters prioritize feeling over perfection. “We want our digital presence to feel like a mood, not a product page,” they say.
This clever strategy has paid dividends, helping them connect deeply with a Gen Z audience that craves authenticity. By blending analogue textures and vintage styling with modern silhouettes, they have created a visual language that stops the scroll.
Sustainability as a Standard, Not a Gimmick
In a fashion market where “sustainability” is often used as a buzzword, The Delarose Sisters are walking the walk, as their commitment is evident in their supply chain. The brand produces its statement swimwear in small-batch runs to avoid overproduction, utilizing regenerated fabrics derived from recovered ocean plastics.
Their sustainable manufacturing takes place in a solar-powered facility in Bali, and this choice of location was deliberate, combining the island’s reputation for skilled swimwear craftsmanship with a commitment to renewable energy.
“Our mission is to create swimwear more consciously; using responsible materials, small production runs, and lower-impact manufacturing without sacrificing design or quality,” said Valentina Delarose. “Sustainability for us is about making better choices at every stage, not overproducing, and building a brand that’s designed to last rather than follow fast trends.”
This ethos has garnered them significant recognition, including features in L’Officiel, InStyle, and Forbes, as well as accolades during their showcase at Miami Swim Week 2025, where they generated over 2 million social media impressions.
Strategic Growth and Global Reach
Despite the pressure to scale rapidly in a booming market, The Delarose Sisters have adopted a disciplined, selective approach to distribution. Their strategy focuses on quality over quantity, a principle that extends to their retail partnerships.
Currently, the brand’s strongest customer base lies in the UK and Europe, though their reach extends far beyond. Their collections are available online via their direct-to-consumer platform and through a curated network of international retailers. They currently stock in five select locations across Dubai, Ibiza, and the UK, including renowned partners like Wolf & Badger and O Beach Ibiza.
“We choose partners that align with our brand aesthetic and customer rather than focusing on mass distribution,” said Ivana Delarose. This exclusivity maintains the brand’s luxury positioning and ensures that the client experience remains consistent.
Advice for Aspiring Fashion Entrepreneurs
For new B2B e-commerce brands looking to enter the competitive swimwear space, The Delarose Sisters offer sage advice grounded in their own success. They warn against the pitfalls of scaling too quickly without a solid foundation.
“We like to focus on the brand before scaling it,” said Valentina Delarose. “Buyers and partners don’t just buy products — they buy a point of view. Invest in strong visuals, clear storytelling, and consistency across digital and wholesale touchpoints.”
They emphasize the importance of building relationships early and staying selective, allowing credibility to grow organically rather than chasing fast expansion.
The Power of Sibling Synergy
Behind the brand’s polished exterior is a dynamic sibling relationship that powers its creative engine. While the pair are frequently mistaken for twins—a misconception they play into by coordinating outfits—they are actually five years apart. Ivana is 30, and Valentina is 25.
“The key to running a successful business with your sibling is definitely listening to each other,” said Ivana Delarose. This mutual respect allows them to navigate the high-stakes world of fashion design with a unified front, blending Ivana’s editorial authority with Valentina’s design precision.
Looking Ahead to a Travel-Worthy 2026
As the travel industry rebounds and beach tourism continues to rise, the demand for sustainable, luxury resortwear is set to explode. The Delarose Sisters are perfectly positioned at the intersection of these trends. With a robust marketing strategy, a commitment to ethical production, and a distinct creative vision, they are not just participating in the $23 billion swimwear market—they are reshaping it.
From the solar-powered factories of Bali to the beaches of Ibiza and the digital feeds of millions, The Delarose Sisters prove that style and substance can coexist. As they continue to expand their global footprint, one thing is certain: this is one brand that is making waves, both in fashion and in sustainability.
