PEBE Brings Scientific Precision to Online Sports Bra Fitting with Brarista's AI Bra Fitting Chatbot

Brarista is proud to announce our newest partnership with PEBE, the award-winning UK sports bra brand founded by Charlotte, born from her personal frustration of finding a supportive running bra that didn't restrict her breathing. The brand is defined by scientific rigour: their Gravity Sports Bra ranked number one out of over 435 sports bras for movement control at the University of Portsmouth, reducing overall movement by 81%. With every bra developed in 3D, each product is meticulously engineered to work with the body's natural curves - delivering performance without the bulk.

Between the Gravity (D-H cups) and the Cloud (A-D cups), PEBE covers sizes 28-38 A-H - spanning from teenagers buying their very first sports bra all the way through to active women in their 40s and seasoned athletes. And if you've seen their iconic bright pink colourways, you'll know this is a brand that takes looking good just as seriously as performing well.

A brand this rigorous about the science of fit deserves an online bra fitting experience that holds itself to the same standard. This is where Brarista stepped in - bringing AI bra fitting technology built with the same level of care and expertise, co-created with professional lingerie fitters and designed to give every shopper personalised bra fitting guidance that goes well beyond a size chart.

Building the right foundation: a bespoke sizing solution

Before the integration could go live, there was groundwork to do. Bra sizing is complex by nature, and sports bra sizing adds another layer - especially for first-time buyers who may be less familiar with how band and cup sizing works across different products.

The Gravity Sports Bra uses a traditional bra sizing system. The Cloud uses a paired band system - 22/24, 26/28, 30/32, 34/36, 38/40 - which works intuitively once you understand it, but can feel unfamiliar to a shopper encountering it for the first time. For a teenager buying their first sports bra, or someone new to PEBE's range, having a tool that can explain the logic and guide them to the right size in a natural conversation makes a real difference.

Working with the PEBE team, Brarista built bespoke sizing logic for both bras, mapping each product's system so that a single AI fitting conversation can navigate between them accurately - regardless of which sizing system a shopper is familiar with, or which bra they're asking about.

That accuracy extends across borders too. Shoppers arriving from the EU, US, or Australia are now recommended the right PEBE product in the right size, with Brarista's international size conversion that handles that translation seamlessly. For shoppers whose preferred size falls outside of what's currently available, sister sizing logic steps in - identifying the closest alternative so no shopper leaves empty-handed. And for those who want a more guided experience, an integrated fitting quiz draws on the fitting-by-eye method used by professional fitters, assessing bra fit beyond measurements alone to intuitively match each shopper with a product that will work best for them.

Fit guidance that matches the science

Brarista's AI bra-fitting chatbot integrated into the PEBE website

PEBE launched with Brarista's full chatbot, which sits across the site in PEBE's own brand voice and aesthetic - including their iconic highlight yellow - making the experience feel native to the brand. The chatbot goes beyond size recommendations: it guides shoppers through which bra suits their cup size and activity level, handles international sizing conversions, and answers the practical questions that stand between a shopper and a confident purchase.

Brarista's sister sizing logic

Brarista's size recommendations

Brarista AI's product knowledge

The conversations span the full range of what a PEBE shopper might ask - from someone working out which bra suits their cup size and activity, to a first-time buyer converting from an EU size, to a post-HYROX session question about care and washing. Each answer is grounded in PEBE's products and fit logic, so the guidance always feels specific to the brand rather than generic.

A growing sports fitting portfolio - just in time for summer

This partnership marks another chapter in Brarista's growing sports bra expertise. What began with boobydoo - the UK's leading sports bra retailer with over 20 years of fitting experience - extended into maternity sports bras with Latched, and now continues with PEBE. Each partnership has deepened our understanding of what it takes to fit an active body well, and PEBE - where performance science and fit precision genuinely converge - feels like a natural next step in that journey.

With summer here and outdoor running and training season in full swing, the timing couldn't be better. The right sports bra makes a real difference to how you move, and every shopper deserves to find theirs with confidence.

"Charlotte built PEBE from a gap in the market, with the science to back it up," says Bella Trang Ngo, founder of Brarista. "We're proud to bring the same level of precision to the fit experience online."

About Brarista

Brarista is the world’s first AI-powered bra-fitting chatbot platform designed specifically for lingerie retail. By merging advanced AI technology with professional bra-fitting expertise, Brarista revolutionises the online shopping experience and tackles the long-standing challenge of incorrect bra sizing, which affects 90% of consumers and drives dissatisfaction and sales drop-off.

Unlike generic chatbots or simple measuring tools, Brarista offers deep lingerie specialisation, combining professionally graded fitting quizzes, deep learning algorithms, and large language models to democratise expert fitting services at scale. It delivers round-the-clock, personalised, brand-agnostic sizing recommendations through B2B2C white-label software embedded directly within retailers’ websites, free to end-users. Brarista isn’t just another chatbot; it is transforming how an entire industry approaches one of its most persistent challenges.

Book a demo to discover how Brarista’s bra fitting chatbot can revolutionise your lingerie shopping experience.