Girl Swimsuit Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

LUOUSE is the best-performing girl swimsuit brand in July 2026, moving 1,500 units across 2 ASINs for 24.2% of Top 10 volume. PROALLO follows with 1,000 units (16.1%), ahead of UMELOK on 1,000 units (16.1%).

Volume is spread across 8 brands, with the top three holding 56.5% 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 $9.99 to $17.49, 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, 2 ASINs forced its way in: B0FQCRRTD1 booked 400 units at $16.48, with ▼ 33.3% MoM change. On the growth side, B0F83HN7Z5 leads positive momentum with ▲ 100.0% MoM growth on 200 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.