Plus Size Maternity Dress Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Plus Size Maternity Dress sales on Amazon US totaled 13,400 units in July 2026 (▼ 15.2% vs. the prior month), generating an estimated $372,486 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 66.4% of unit volume and 65.5% of revenue, while a typical listing is priced at $31.04. The keyword itself pulled 11,118 Amazon queries over the same period (▼ 6.8% MoM).
Zooming out to the 12-month window ending July 2026, the plus size maternity dress Top 50 moved 108,550 units and $3,402,879 in cumulative sales — an average of 9,046 units and $283,573 per month. Monthly throughput topped out at 15,800 units in June 2026 and dipped to 4,350 in December 2025, leaving the latest reading 50.6% higher than August 2025.
Plus Size Maternity Dress Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
13.4K
▼ 15.2% MoM
Monthly Revenue 2026/07
$372.5K
▼ 18.9% MoM
Top 10 Market Share 2026/07
66.4%
Plus Size Maternity Dress Market Share & Sales Concentration on Amazon US — July 2026
The most-sold plus size maternity dress listing on Amazon US in July 2026 is ASIN B07K1NMJZK (Brand: Peauty), which sold 2,000 units at $16.99 apiece — equal to 14.9% of every unit tracked in this report.
The Top 10 ASINs account for 8,900 units and $244,138 in July 2026 — 66.4% of unit volume and 65.5% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Plus Size Maternity Dress' on Amazon
July 2026
Is 66.4% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B07K1NMJZK
Peauty “Baby Bump” Seamless Maternity Shapewear, High Waisted Mid-Thigh Pregnancy Underwear Prevent Chafing Belly Support
2K
▲ 0.0%vs. prior month
$28.9K
latest month
12-month trend
B0D8QNSYHK
Momcozy Pregnancy Belly Band, CozySupport 3D Ergonest Maternity Belly Band | Invisible Pregnancy Belt with Ergonest Support for Back, Abdomen & Waist, Plus Air-Hole Ventilation & Easy Wear
2K
▼ 33.3%vs. prior month
$112.2K
latest month
12-month trend
B0C89NRQH8
Momcozy Women's Maternity Underwear, High-Waist Seamless Over-Bump Briefs | 360° belly support with an expandable panel, breathable mesh and soft stretch fabric for pregnancy through postpartum
900
▼ 10.0%vs. prior month
$25.7K
latest month
12-month trend
B07QT2YVVM
KIM S "Baby Shower Essential Maternity Shapewear, Belly Support Underwear | Mid thigh, Anti chafing, Smooth stretch feel, Secure belly fit, Flexible coverage, Versatile for pregnancy oufit
800
▼ 20.0%vs. prior month
$10.2K
latest month
12-month trend
B07CDD252F
Rnxrbb S-2XL Women Summer Bodycon Maternity Dresses Pregnancy Tank Clothes | Soft Ruched Mama Dress with Room for Growing Bump, Sleeveless Tank Top Design for Summer, Perfect for Pregnancy&Baby Shower
800
▲ 60.0%vs. prior month
$7.6K
latest month
12-month trend
B0GHS1B7Q4
OFEEFAN Summer Dresses for Women Flowy Casual A-Line Midi Dress Beach Vacation Sundresses with Pockets S-2XL
700
▼ 30.0%vs. prior month
$17.5K
latest month
12-month trend
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Best Plus Size Maternity Dress Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Momcozy is the best-performing plus size maternity dress brand in July 2026, moving 2,900 units across 2 ASINs for 32.6% of Top 10 volume. Peauty follows with 2,000 units (22.5%), ahead of OFEEFAN on 1,200 units (13.5%).
With 8 brands splitting the Top 10 and 68.5% 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 $16.99 to $44.99, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Momcozy
2 ASINs in Top 10
32.6%
Units
2.9K
Revenue
$137.9K
Avg. price
$44.99
B0D8QNSYHK
$59.99·★4.1·2.5K revsMomcozy Pregnancy Belly Band, CozySupport 3D Ergonest Maternity Belly Band | Invisible Pregnancy Belt with Ergonest Support for Back, Abdomen & Waist, Plus Air-Hole Ventilation & Easy Wear
Units sold2KB0C89NRQH8
$29.99·★4.5·1.3K revsMomcozy Women's Maternity Underwear, High-Waist Seamless Over-Bump Briefs | 360° belly support with an expandable panel, breathable mesh and soft stretch fabric for pregnancy through postpartum
Units sold900
Peauty
1 ASIN in Top 10
22.5%
Units
2K
Revenue
$28.9K
Avg. price
$16.99
B07K1NMJZK
$16.99·★4.5·9.9K revsPeauty “Baby Bump” Seamless Maternity Shapewear, High Waisted Mid-Thigh Pregnancy Underwear Prevent Chafing Belly Support
Units sold2K
OFEEFAN
2 ASINs in Top 10
13.5%
Units
1.2K
Revenue
$26.6K
Avg. price
$21.23
B0GHS1B7Q4
$24.98·★4.0·1.7K revsOFEEFAN Summer Dresses for Women Flowy Casual A-Line Midi Dress Beach Vacation Sundresses with Pockets S-2XL
Units sold700B0GHJFKW5B
$17.49·★4.3·995 revsOFEEFAN Summer Dresses for Women 2026 Backless Cami Maxi Sundresses Spaghetti Strap Beach Vacation Clothes Swimsuit Coverup
Units sold500
Trending Plus Size Maternity Dress Products — Growth Leaders & New Top 10 Entrants
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: B08SQMLG2R booked 300 units at $52.99, with ▲ 0.0% MoM change. On the growth side, B0GCZS6CC5 leads positive momentum with ▲ 300.0% MoM growth on 200 units, with B0GT9CCWDL close behind at ▲ 300.0% MoM 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.
B08SQMLG2R
72styles Maxi Infinity Dress for Bridesmaids, Convertible Multi-Way Wrap
Price
$52.99
Rating
4.4
Reviews
13.1K
Latest month sales
B0GCZS6CC5
PEVRL Plus Size Summer Maxi Dress for Curvy Women with Pockets 1X-5X
Price
$23.99
Rating
4.5
Reviews
312
Latest month sales
B0GT9CCWDL
OFEEFAN Summer Dresses for Women 2026 V Neck Sleeveless Casual Dress Elegant Work Long Midi Dresses for Women Tie Waist
Unlock to view ASIN details and product titles
Price
$32.98
Rating
3.9
Reviews
478
Latest month sales
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