Girls 2 Piece Swimsuit Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

PROALLO is the best-performing girls 2 piece swimsuit brand in July 2026, moving 1,000 units across 1 ASIN for 27.0% of Top 10 volume. The Children's Place follows with 900 units (24.3%), ahead of UMELOK on 600 units (16.2%).

With 7 brands splitting the Top 10 and 67.6% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $14.97 to $18.24, 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: B0CFCXZY6Y booked 300 units at $23.00, with ▲ 200.0% MoM change. On the growth side, B0GVN59B1R leads positive momentum with ▲ 100.0% MoM growth on 200 units, with B0CFCZQ69R 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.