Maternity Bracketing: Sizing for a Body That Changes Every Month
Maternity bracketing is rational planning, not indecision. The size that fits at week twenty is not the size that fits at week thirty, and brands disagree about how much growth room to build in. Shoppers order two because they are really choosing a timeline, not just a fit.
Maternity sizing asks shoppers to buy for a body that will be different in six weeks. Shoppers bracket because the right size depends on trimester, carry position, and how much growth room the cut allows. This guide walks through the practical details, the common mistakes, and the checks that help you get it right the first time.
Why shoppers reach for two sizes
The first size is a guess based on the chart. The second size is insurance against everything the chart leaves out: fabric behavior, cut, and how the garment feels after an hour of real wear. When returns are free and sizing information is thin, ordering two is the rational response, not a bad habit. Stores that treat bracketing as a customer problem miss that it is usually an information problem they own.
Retailers can see the pattern in their own data. Bracketed orders cluster on specific styles, specific size steps, and first time buyers who have no kept size on file. That clustering is diagnostic. It points to the exact product pages where better information would let a shopper commit to one size with confidence.
What better information looks like
Useful sizing help is specific. Garment measurements for the actual item, model measurements with the size worn, fit notes tied to body shapes, and reviews filtered by height and usual size all beat a generic size chart. The test is simple: could a shopper rule out one of the two sizes using only what is on this page.
Video and motion help more than another paragraph of copy. A short clip of the garment being worn, sat in, and moved in shows drape and restriction that flat photos hide. For categories with high bracketing, that investment usually pays for itself in avoided returns handling alone.
Reducing bracketing without punishing shoppers
The wrong response is friction: restocking fees, short windows, and warnings that make honest shoppers feel accused. Those tactics suppress returns on paper while suppressing conversion with them. The durable fix is confidence, through better fit data, kept size memory, and easy exchanges that make the single order feel safe.
Start with the highest bracketing styles and fix their pages first. Add the missing measurement, clarify the ambiguous fit note, and watch the two size rate for those styles over the following weeks. Bracketing falls fastest where the information gap was largest, which makes early wins easy to find.
Related reading
These earlier guides go deeper on connected questions: Workwear Bracketing Between Seasons: Sizing for Layers and Commutes, Holiday Party Outfit Bracketing: Why Festive Dress Codes Raise Returns, and Youth Sports Uniform Bracketing: Team Orders, Growth, and the Coach Deadline.
Frequently asked questions
How can I tell which size to keep without ordering two?
Use garment measurements rather than size labels, compare them with a similar item you already own and like, and read fit notes and reviews from shoppers with your height and usual size. If a store offers kept size guidance from past buyers, that is usually the most useful signal of all.
Does bracketing hurt my account with a retailer?
Ordinary bracketing within a published returns policy is normal shopping behavior and stores build it into their planning. Problems arise with patterns that look like abuse, such as returning heavily worn items or extreme volumes, which are different behaviors entirely.
Why do two sizes of the same item sometimes fit almost identically?
Size steps are not uniform. In some ranges the difference between adjacent sizes is small, especially in stretch fabrics, which is exactly why shoppers bracket there. A brand that publishes the actual measurement difference helps shoppers pick correctly.
What should brands fix first to reduce bracketing?
The styles with the highest two size order rates. Their pages usually have a specific, fixable information gap, such as a missing garment measurement or a fit note that contradicts reviews. Fixing the top few styles moves the overall rate fastest.