Gen Z Buys Three Sizes and Returns Two: the Bracketing Boom

Here is the fitting room trick that broke online shopping: buy the dress in three sizes, keep the one that fits, and send the rest back. New research released this week shows that a staggering sixty-one percent of Gen Z apparel shoppers regularly practice this move, known in retail as bracketing. That makes young shoppers more than four times as likely as baby boomers to buy with plans to return — and it is quietly reshaping how every clothing store you love handles inventory, shipping, and the dreaded returns label. This is the Bracketing Boom, and it is only getting bigger.

The numbers come from a fresh study by Locus Robotics, the warehouse-automation company, which surveyed shoppers across generations about how they actually buy clothes, beauty, and skincare. Just fifteen percent of baby boomers said they bracket apparel purchases, compared with about half of millennials. Younger shoppers are also far more likely to discover products through social media: seventy-nine percent of Gen Z shoppers have bought an apparel, beauty, or skincare product after finding it on a feed. That combination — social discovery plus instant bracketing — means demand for a trending item can spike almost overnight.

Why the Bracketing Boom started

Bracketing makes perfect sense from the shopper's side. Sizing is wildly inconsistent between brands — a medium at one store is a small at another, and returns are free at many retailers, so the rational move is to order the range and let the bathroom mirror decide. Add the speed of social commerce, where a viral try-on video can sell out a style in hours, and bracketing becomes the fastest way to guarantee you get something that fits before it is gone. The research found that more than two-thirds of shoppers who discovered a product on social media bought within three days, a pace that leaves warehouses guessing.

Rick Faulk, the company's chief executive, said fulfillment operators are now living in a world where demand patterns can change in hours and days, not seasons. "We are seeing this firsthand with a record number of peak robot requests to help retailers around the world respond to demand surges," he said in a statement accompanying the release. His point: warehouses are being rebuilt around the expectation that a big share of what ships out will come right back.

This is also a timeline story. A decade ago, bracketing was a niche habit of power shoppers with premium credit cards. It went mainstream as free, easy returns became the default perk of online retail — first as a customer-acquisition weapon during the e-commerce wars, then as an expectation no store could take away without backlash. The Bracketing Boom is the second-order effect: a generation raised on free returns is now using them at industrial scale, and retailers built their margins on the assumption that most orders would stay put.

What it costs everyone else

There is no free lunch in a returns label, and the bill is starting to land. Processing a returned garment — inspecting it, repackaging it, restocking it — costs retailers several dollars per item, and a meaningful share of returns never make it back onto shelves at all, ending up discounted, liquidated, or thrown away. That is the quiet engine behind the fees you have probably noticed creeping into checkout pages: restocking charges, shorter return windows, and loyalty tiers that reward shoppers who keep what they buy.

The research points to a second pressure point that matters even more to shoppers: availability. A third of respondents said an unavailable item, size, shade, or formula led them to abandon or delay a purchase — the most common dealbreaker in the survey — while seventeen percent said they require same- or next-day delivery. In other words, the same generation that brackets its orders is also the most punishing when a size is missing. Stores are caught in the middle, holding more inventory per style to feed the bracketers while racing to keep shelves stocked for everyone else.

So what should you actually do? If bracketing is your strategy, check a retailer's returns policy before you order the range — fees are spreading, and the stores that still offer free returns are quietly tracking who abuses them. Consider size-finder tools and recent-review photos, which cut down the guesswork that makes bracketing necessary. And when a style goes viral, remember that two-thirds of social-discovery buyers purchase within days: the early mover gets the size, the late bracket gets the restock lottery. For the bigger picture on how young shoppers are driving retail right now, read how Gen Z and millennials came to own holiday spending — and for why your money habits look the way they do, see why Gen Z spends less at more stores than other shoppers.