Girlfriend Collective Sizing: How Giving Away Leggings Built a Plus-Size Activewear Brand
In 2016, Ellie Dinh went looking for leggings that were not made from virgin plastic and did not stop at a large. She could not find a pair she was willing to buy, so she and her husband Quang made one. The brand promoted its pre-launch giveaway in 2016, ahead of its full collection in 2017. The couple offered a free pair to anyone who paid for shipping, and around 10,000 orders arrived on the first day.
That story gets told as a marketing stunt. It was really a product decision with a marketing side effect. The Girlfriend Collective sizing range was the product: it had to fit a body that the category had been ignoring, in recycled fabric, at a price the customer would accept. None of that is fixed by a giveaway.
WHO: Who Was Girlfriend Collective Sizing Actually Built For?
The answer is not the zero-waste movement. It is a woman who has been shopping activewear for years and has learned to expect two things: the size range ends before her body does, and the largest sizes come in black only.
The industry numbers explain why she expects that. Lululemon, the category's reference point, sold most of its women's line up to size 14 until September 2020, when it began offering core styles up to size 20. Its chief executive called the change an important step forward on an earnings call. Seven years earlier, its founder had said publicly that the pants "don't work for some women's bodies".
Girlfriend Collective sizing did not treat that gap as a plus-size opportunity. It built the line from XXS to 6XL in 2018, eleven sizes, and made the core Compressive style available across that range. The result is a customer base the brand puts at more than 800,000 people, while its core black Compressive High-Rise Legging has over 18,500 product reviews averaging 4.7 stars.
The same logic shows up outside apparel. The Honey Pot built a business on a customer that mass retail had written off, and sold for 380 million dollars. The customer was always there. The product was not.
WHAT: What Does It Take to Make a Legging in Eleven Sizes?
The material is the part the brand talks about most. Each pair of Compressive leggings is made from roughly 25 recycled water bottles, spun into a fabric that is 79 percent recycled polyester and 21 percent spandex. The fabric is opaque enough to pass a squat test, and the leggings come in three inseams, 23.75, 28 and 31 inches, which matters more than it sounds when the same style has to work on a 5'2" customer and a 5'10" one.
The part that is harder to see is the pattern grading. Extending a size run is not a matter of scaling a size-small pattern upward. Crotch depth, rise placement, thigh circumference and the distribution of compression all have to be re-cut for a larger body, or the waistband rolls and the knee bags. When Reviewed tested Lululemon's extended sizes in 2021, the reviewer's main complaint was exactly that: the waistband did not hold, and she kept pulling the leggings up. That individual review illustrates how fit can vary across wearers.
The take-back program is the other half of the product argument. ReGirlfriend launched in August 2019. Its current program accepts used clothing from any brand, not just its own. Customers receive 10 US dollars in credit per Girlfriend item and 5 dollars per item from another brand, redeemable for up to 30 percent off a future order. The program runs through SuperCircle, which sorts each item for resale or recycling. It also functions as a retention mechanism: the credit only becomes real when the customer comes back to the site.
The weaknesses are real and worth stating. The fabric is highly compressive, which some customers love and others find restrictive, and it is not the most breathable option for hot workouts. Recycled polyester still sheds microplastics in the wash, a problem the brand addresses with a washing machine filter rather than a fabric change. And the price has moved up. The leggings that sold for 60 to 80 dollars in the brand's early years now list at 108 dollars for the core style, with some versions above 100 dollars.
WHY: Why Did Free Leggings Work Better Than Advertising?
Because the offer was priced like a customer acquisition cost, not like a giveaway. In the launch, customers paid about 20 dollars in shipping for a product that retailed at 60 to 80 dollars. The brand absorbed the product cost and bought a customer, an email address and a piece of user-generated content as an alternative way to acquire customers.
The economics only work if the product earns a second purchase, and the early numbers suggest it did. Meg Strachan, who ran growth at the company from 2019, said on the Glossy podcast that Girlfriend grew 350 percent year over year during her tenure. The brand remains privately held; its full funding history and cash flow are not publicly established. Kitsch reached half a billion dollars in sales with no outside funding, so the constraint is not as binding as the category assumes.
Transparency did the work that advertising usually does. A customer who cannot verify a sustainability claim has to trust the brand making it, and publishing production and certification information is a cheaper way to earn that trust than a campaign. It also creates a constraint: public supply-chain commitments create an expectation that production changes will be explained.
The price increase is the part of the model that gets left out of the case study. Eleven sizes, three inseams, a certified factory and a take-back program all cost more per unit than a narrow size run made in a cheaper facility. Girlfriend has chosen to recover that cost at the register rather than by shrinking the range, which keeps the product credible and narrows the number of customers who can afford it. At 108 dollars, the leggings are competing with Lululemon, not with Old Navy.
HERSTORY: Whose Story Is Behind the Size Range?
Ellie Dinh is the creative director and Quang Dinh is the chief executive. The company is usually described as husband-and-wife, which is accurate and also slightly misleading: the founding insight came from Ellie's experience as a shopper, not from a business plan. She wanted a pair of leggings she could wear to a workout without wondering where the plastic came from or whether the seam would hold at her size.
The brand name evokes friendship and a familiar, conversational voice. A girlfriend is who you call when you need an honest answer about how something looks, and the brand has built its voice around that register: direct, unglamorous, more interested in how the waistband behaves than in how the campaign photographs.
Ten years in, Girlfriend Collective remains privately held and has become a reference point in size-inclusive activewear. Public information does not establish its funding history, profitability or cash flow. Its core product must keep earning a premium price as competitors expand their own size ranges.
The lesson is not that inclusivity sells. Plenty of brands have run inclusive campaigns without changing a pattern. The lesson is that a size range is a product and manufacturing decision before it is a marketing one. Girlfriend Collective's real advantage was not the free leggings or the recycled fabric. It was the decision to cut eleven sizes properly, disclose the production location and certification, and charge enough to keep doing it.
Double V is a cross-border operating partner and intelligence house for emerging consumer brands, based in Hong Kong and Shenzhen. We help brands connect China and the world through three businesses: Brand Operation (marketing and distribution for brands on retainer), Brand Incubation (sister company Glam Infinite and our own-built brands), and Industry Intelligence (cross-border research and reports). Talk to our team
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