Plus Size Bathing Suit Top Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Daci is the best-performing plus size bathing suit top brand in July 2026, moving 1,000 units across 1 ASIN for 19.2% of Top 10 volume. MODLILY follows with 900 units (17.3%), ahead of Yonique on 800 units (15.4%).

Volume is spread across 9 brands, with the top three holding 51.9% between them. No single label controls the shelf, which usually leaves room for a well-differentiated listing to take share without outspending an incumbent. Average selling prices among the leaders run from $33.99 to $43.99, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B0CLZN3M7Y booked 400 units at $36.99, with ▲ 33.3% MoM change. On the growth side, B0DY7C2G5B leads positive momentum with ▲ 100.0% MoM growth on 200 units, with B0G7JJLFTS close behind at ▲ 100.0% MoM on 100 units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.