Happy Size launches plus-size marketplace powered by Mirakl technology
Platform serves 25+ million annual visitors across DACH region with 30+ brands and 20,000+ products
Expansion planned for the Netherlands (Q3 2025), Belgium, France, and Switzerland (2026)
“Happy Size proves that specialized marketplaces can compete with generalists through expert curation and deep customer understanding”, Georg Sobczak, Regional Vice President DACH & EE & NL at Mirakl
Paris/Rastede – 24 July 2025 - Happy Size, a leading German plus-size retailer owned by Popken Fashion Group, announced its partnership with Mirakl, the leading provider of eCommerce software solutions, to launch a specialized marketplace platform serving plus-size customers across the DACH region and Europe.
The global plus-size fashion market, valued at USD 333 billion in 2025, is projected to reach over USD 500 billion by 2034. Europe accounts for 28% of this market, highlighting the significant demand for specialized retail experiences that understand and cater to these customers’ unique needs.
“We saw a clear gap in the market: plus-size customers were struggling to find variety, quality, and style all in one place. Our interactions with > 300,000 customers showed us they wanted more than just larger sizes - they wanted a curated experience that truly understands their needs. Mirakl’s technology allows us to deliver exactly that while scaling rapidly across Europe.” said Laura Grünloh, Team Lead Platform Management at Happy Size
Happy Size operates as a specialized plus-size marketplace that unifies leading brands like Ulla Popken, JP1880, YOEK and Miss Mary of Sweden on a single platform. Powered by Mirakl, the company delivers extensive product variety across all price points while providing access to niche offerings tailored to plus-size customers. With over 25 million product detail page visits, the platform demonstrates robust demand for dedicated plus-size shopping experiences.
"Happy Size proves that specialized marketplaces can compete with generalists through expert curation and deep customer understanding. Their focused approach will create lasting competitive advantage in the platform economy.” said Georg Sobczak, Regional Vice President DACH & EE & NL at Mirakl
The marketplace currently serves customers in Germany and Austria, with plans to expand to the Netherlands by the end of Q3 2025, followed by Belgium, France, and Switzerland in 2026. At launch, the platform features over 30 established plus-size brands offering more than 20,000 products for both men and women. The assortment covers all fashion categories including dresses, jackets, underwear, shoes, and accessories, covering sizes L-10XL.
About Happy Size
Happy Size stands for fashionable variety in the plus-size sector and focuses on quality, fit and targeted brand partnerships.
At the center of this is a carefully selected range of brands, which is specifically expanded to include partners who share the company's values. These strategic co-operations result in a diverse and high-quality range that is precisely tailored to the needs of the plus-size target group.
The aim is to create a shopping experience that focuses on the individual needs of customers. Partners benefit from an established platform with a fast-growing reach and an innovative customer approach.
About Mirakl
Mirakl is the leading provider of eCommerce software solutions. Mirakl's suite of solutions provides enterprises with a transformative way to drive significant growth and efficiency in their online business.
Since 2012, Mirakl has been pioneering the platform economy, empowering retail and B2B enterprises with the most advanced, secure and scalable technology to digitize and expand product assortment through marketplace and dropship, improve efficiency in supplier catalog management and payments, personalize shopping experiences, and boost profits through retail media.
Mirakl is trusted by 450+ industry-leading businesses worldwide, like Airbus, ASOS, Best Secret, Carrefour, Conrad Electronic, Coca Cola Hellenic, Douglas, Fressnapf, H&M Home, Home24, MediaMarkt Saturn, and Sonepar. For more information: www.mirakl.com
Press contacts
Louise Mélis - +33(0)7 72 50 29 50 - louise.melis@mirakl.com
Happy Size - kontakt@happy-size.de