How Stockholm-Based Activewear Brand Sisterly Tribe is Bridging the Gap Between Studio and Streetwear
The modern consumer’s lifestyle has undergone a fundamental transformation over the past decade, driven largely by the blurring lines between professional responsibilities, personal wellness routines, and daily social engagements. Recognizing this shift toward versatile, utilitarian wardrobes, entrepreneurs across the globe have sought to capture a lucrative market segment: apparel that functions equally well during a high-intensity pilates session as it does on a grocery run or during a casual coffee meeting. Among the emerging European labels capitalizing on this cultural pivot is Sisterly Tribe, a Stockholm-based women’s activewear and lifestyle brand founded by Kristin Hars.
Launched in 2021, Sisterly Tribe has steadily carved out a distinct niche in the crowded athleisure market by blending ballet-inspired aesthetics with traditional activewear performance. As the brand eyes aggressive international expansion, including significant retail footholds in the United Kingdom and the United States, its trajectory offers a compelling case study in scaling a boutique apparel label through a combination of digital-first direct-to-consumer strategies, selective wholesale partnerships, and a staunch commitment to sustainable manufacturing practices.
Origins and Brand Philosophy
The conceptual foundation of Sisterly Tribe was born out of a personal frustration familiar to many contemporary consumers: the difficulty of finding high-performance athletic wear that did not look out of place outside the gymnasium. Kristin Hars envisioned a label that could move seamlessly between fitness classes—such as yoga, barre, and pilates—and everyday life errands without requiring a wardrobe change.
Operating from a base in Gothenburg, Sweden, Hars assembled a lean, five-member team to bring her vision to life. The resulting product portfolio spans a carefully curated range of balloon pants, merino wool cardigans, supportive leggings, halter bras, and signature ballet wraps. Retail pricing reflects a mid-to-high tier positioning, starting at approximately £52 for ribbed seamless shorts and scaling up to £218 for luxury merino wool knitwear pieces.
Rather than relying purely on generic stock fabrics, Sisterly Tribe has invested heavily in proprietary material development. A prime example is the brand’s signature SoftSculpt fabric. Developed in close collaboration with manufacturing partners, this custom-engineered textile blends recycled polyester and spandex to achieve an optimal balance of softness, four-way stretch, and structural support. By avoiding off-the-rack materials, the brand has been able to establish a distinct tactile and functional identity that resonates deeply with its customer base.
Production, Supply Chain, and Sustainability Commitments
The modern fashion consumer is increasingly discerning regarding the environmental and social impacts of their purchases. In response, transparency and ethical manufacturing have transitioned from optional marketing angles to mandatory business pillars. Sisterly Tribe designs all of its collections in Sweden while outsourcing production to specialized manufacturing partners in China and Portugal.
To maintain rigorous oversight across its supply chain, the brand enforces a strict Code of Conduct. Every manufacturing partner is legally required to sign this agreement, which outlines explicit benchmarks concerning fair working conditions, equitable wages, workplace safety, and environmental stewardship.
Furthermore, sustainability is integrated directly into the brand’s material selection process. While acknowledging the inherent environmental footprint associated with manufacturing new garments, Sisterly Tribe actively incorporates lower-impact fibers into its lines. The brand utilizes organic cotton for its casual sweatshirts and sweatpants, Lenzing Modal—a semi-synthetic regenerated cellulose fiber derived from sustainably managed beechwood pulp—for its popular ballet wraps, and lyocell for its structured balloon pants.
In an industry historically plagued by the detrimental environmental effects of over-production, Hars and her team have maintained a strict focus on considered inventory quantities. By managing production volumes carefully, the label aims to mitigate deadstock and minimize waste, a strategy that aligns with the broader Nordic tradition of minimalist, purposeful design.
Chronology of Growth and Retail Expansion
Since its inception in 2021, Sisterly Tribe has executed a calculated, multi-phased growth strategy that balances digital direct-to-consumer (DTC) sales with high-profile wholesale partnerships.
Phase one (2021–2022) focused on establishing the brand’s digital footprint via its international e-commerce platform. During this foundational period, Hars concentrated on refining the product lineup, establishing core textile engineering with suppliers, and building an organic community of loyal customers through social media channels and word-of-mouth marketing.
Phase two (2023–2024) marked a significant pivot toward prestige brick-and-mortar and online wholesale partnerships. Sisterly Tribe secured a major retail listing with British luxury department store giant Selfridges. The brand’s collections are now stocked both online and across key physical locations, including Selfridges London, the Trafford Centre in Manchester, and Exchange Square in Manchester. Concurrently, the label expanded its Middle Eastern footprint through a partnership with Ounass, a premier online luxury e-commerce platform based in Dubai.
Phase the third, currently underway, centers on transatlantic expansion. Through an emerging wholesale partnership with American department store chain Nordstrom, Sisterly Tribe has positioned itself to capture a share of the vast United States retail market.
A Typical Working Day for the Founder
Despite the brand’s international scaling, founder Kristin Hars remains deeply embedded in the daily operations of the business. Articulating the realities of running a growing enterprise, Hars notes that no two days are identical.
"I’m still very hands-on, so my days range from reviewing sales and product performance to working on new collections, campaigns and international growth," Hars explains. "That variety is one of the things I love most about building Sisterly Tribe."
This hands-on leadership style has allowed the founder to maintain tight creative control over the brand’s aesthetic direction while rapidly responding to real-time sales data and shifting consumer preferences.
Overcoming Business Challenges and Core Lessons
Building a contemporary apparel brand in an increasingly saturated global market is fraught with systemic hurdles. Reflecting on the journey since 2021, Hars emphasizes that growth has not been defined by a single obstacle, but rather by an ongoing evolution of challenges.
"There hasn’t been just one. Every stage of growth brings a new challenge—from managing cash flow and navigating production delays to building the right team and figuring out how to scale the business sustainably," says Hars. "A big part of the journey has been learning what to prioritise, what to say no to and, ultimately, how to keep moving forward."
When asked about the most important lessons learned throughout her entrepreneurial journey, Hars points to the necessity of internal resilience and intuitive decision-making. She stresses the importance of trusting oneself, surrounding oneself with capable and passionate team members, and maintaining forward momentum regardless of short-term setbacks. "Nothing lasts forever—the good or the bad—so you have to keep moving, learning and adapting along the way," she reflects.
Industry Inspirations and Strategic Advice
Entrepreneurs rarely build in a vacuum, and Hars frequently draws inspiration from the broader European fashion landscape. As a Swedish native, she holds particular admiration for Elin Kling and the trajectory of Toteme, a Stockholm-based premium contemporary label renowned for its uncompromising aesthetic clarity.
"Toteme has such a clear identity, and they’ve managed to scale globally without losing that point of view. I find that incredibly inspiring," Hars notes.
This philosophy of maintaining a resolute brand identity while pursuing international scale heavily influences Sisterly Tribe’s corporate strategy. Hars’s primary piece of advice to aspiring founders echoes this sentiment: believe in yourself and trust your instincts. She argues that because there are very few rigid blueprints for modern business success, possessing the confidence to forge an independent path—and accepting calculated risks along the way—is paramount.
Product Performance and Market Reception
Sisterly Tribe’s product catalog has evolved organically to reflect the shifting lifestyle needs of its clientele. While activewear remains a core pillar, the brand’s strategic push into elevated casualwear has yielded impressive commercial results.
Among individual items, the brand’s signature ballet wrap—retailing at £88 and constructed from Lenzing Modal—has emerged as a top-selling piece, favored for its versatility and tactile comfort. Meanwhile, the SoftSculpt fabric line continues to dominate activewear sales.
However, the brand’s recent expansion into non-activewear categories has signaled a broader structural evolution. The release of "The Reset" collection, which introduced structured balloon trousers, merino wool cardigans, and tailored zip jackets, demonstrated that the brand’s customer base is eager to adopt Sisterly Tribe pieces for everyday wardrobes well beyond the yoga studio.
"My vision for Sisterly Tribe has always been to build a lifestyle brand with pieces for the studio and beyond," Hars states. "Our customers already wear the brand outside of workouts, and the response to our balloon pants and knitwear has been really encouraging. It’s a natural way to offer more to our existing customers, while also introducing Sisterly Tribe to new ones."
Future Outlook: Physical Spaces and Global Footprint
Looking ahead, Sisterly Tribe’s strategic roadmap is defined by two primary objectives: deepening its international penetration in key Western markets and expanding its physical retail footprint.
While the brand currently relies on its direct-to-consumer e-commerce platform and major wholesale partners like Selfridges, Ounass, and Nordstrom, Hars harbors clear ambitions for standalone brick-and-mortar spaces. Rather than opening traditional retail stores indiscriminately, the founder envisions creating immersive brand environments in urban centers where Sisterly Tribe has already cultivated a dense, engaged customer community. Cities such as London, New York, and Los Angeles top the list for potential flagship locations.
"For me, it would be about bringing the whole Sisterly Tribe world to life and creating an experience that goes beyond just the product," Hars explains.
Implications and Market Analysis
The growth trajectory of Sisterly Tribe illustrates several broader macroeconomic and retail trends within the post-pandemic apparel sector. First, it underscores the continuing resilience of the premium athleisure and lifestyle segment. Consumers continue to prioritize comfort, functionality, and multi-purpose utility in their wardrobes, ensuring sustained demand for brands that successfully bridge the gap between active and casual wear.
Second, the brand’s selective scaling model highlights the diminishing boundary between digital-native direct-to-consumer brands and traditional wholesale distribution. By pairing a robust global e-commerce operation with high-prestige department store partnerships in Europe, the Middle East, and North America, Sisterly Tribe has maximized brand visibility and credibility without incurring the immediate financial liabilities of operating an expansive network of proprietary retail stores.
Finally, as regulatory scrutiny surrounding environmental claims in the fashion industry intensifies across the European Union and beyond, Sisterly Tribe’s proactive integration of certified supply chain codes of conduct, audited manufacturing partners, and lower-impact cellulose and organic fibers positions the brand favorably against competitors slow to adapt to sustainability mandates.
As Sisterly Tribe continues to roll out new collections and evaluate prospective physical footprints in global fashion capitals, the brand stands as a notable example of contemporary Nordic entrepreneurship—balancing meticulous design, ethical accountability, and a sharp understanding of the modern consumer’s evolving lifestyle.
