Is 9-12 month girl clothes profitable to sell on Amazon United States?

The niche generates $196K/yr across 118 tracked products. 27 of 50 products launched in the last 360 days are still selling. 90-day search growth is -7.4%. Flapen's verdict: Worth a look (52/100).

How competitive is the 9-12 month girl clothes niche?

47 brands and 53 sellers compete. The top 5 products take 19% of clicks and top 5 brands hold 45% of demand.

What do buyers complain about in 9-12 month girl clothes?

Top complaints mined from reviews: Size-Overall, Material Quality, Quality-Overall. The return rate is 2.3%.

When does demand for 9-12 month girl clothes peak?

Demand peaks in Aug–Oct–Nov–Dec; the busiest month runs 2.5× the quietest.

What does it cost to enter the 9-12 month girl clothes niche?

Listings span $9.94–$37.32; the average listing price is $17.30 (sweet spot $15–$100). The average incumbent carries 8,076 reviews — the moat a new listing must climb.

9-12 month girl clothes

Worth a look

Shows a fragmented shelf (top 5 take 19% of clicks), but weak search conversion (1.2%) keeps it on the watch list.

Competition

Incredible19%

top-5 click share — an open shelf

Brand share

Great45%

top-5 brand share — no brand owns this niche

Avg price

Great$17.30

avg listing price — sweet spot $15–$100

Price range

Great$9.94–$37.32

cheapest to priciest tracked listing — scored on the share inside $15–$100

Returns

Good2.3%

return rate — above 5% kills the launch gate

Market size

Okay$196K

$196K/yr · 923K searches

Review moat

Bad8,076.42

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-7.4%

90-day search growth — must beat 0% to launch

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.2%

search→purchase rate — share of searches ending in a sale

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, 9-12 month girl clothes is a $196K/yr Amazon United States market (923K searches/yr). The top 5 brands hold 45% of demand. Demand peaks in Aug–Oct–Nov–Dec. Verdict: Worth a look — 52/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

9-12 month girl clothes market data

Units sold / yr: 13K–15K; avg 0–100/product
Revenue / yr: $216K–$260K; units × avg price
Conversion rate: 1.2%
Avg BSR: #100
Page quality: 0%
Prime: 100%
Sponsored: 96%
Out of stock: 3.0%
Avg brand age: 35 months
Avg seller age: 156 days

Competition & brand share

Clicks spread well past the top 5 (19% combined) — an open shelf where new products get seen.

Brands

47 falling

Sellers

Top-5 brand share

45%

Top 20: 83%

Top-5 click share

19%

Top 20: 45%

Open market

50%

Amazon Essentials12%
Simple Joys by Carter's12%
Onesies Brand10%
Tiny Cutey6%
Voonlie5%
Gerber5%

Demand & seasonality

Weekly Amazon search volume, last 79 weeks — -7.4% search growth over the last 90 days.

Peak months: Aug, Oct, Nov, Dec · busiest ÷ quietest = 2.5×

Open Trend

Top 9-12 month girl clothes search terms

9-12 month girl clothes271K/yr -19.2%0.8% conv.
baby girl clothes 12-18 months97K/yr +73.2%1.0% conv.
baby girl clothes 9-12 months60K/yr -25.5%0.5% conv.
6-12 month girl clothes49K/yr -3.7%0.2% conv.
1 year old girl outfits32K/yr +17.5%1.1% conv.
12 month baby girl clothes38K/yr -15.7%0.8% conv.
12 month old girl clothes37K/yr -20.5%1.1% conv.
ropa para nia de 1 ao28K/yr -16.9%0.3% conv.
12-18 month girl clothes fall34K/yr +522.3%0.3% conv.
18 months girl clothes winter26K/yr -1.6%0.3% conv.

All search terms

Top 9-12 month girl clothes products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Tiny Cutey Baby Girl Clothes Infant Summer Outfits Set Ruffle Sleeve Romper and Floral Shorts with Headband (Sleeveless Purple 90 12_months)

Tiny Cutey$15.124.7★2,022 rev

Onesies Brand Baby-Girls 3-Pack Romper Fox 12 Months

Onesies Brand$22.594.8★2,230 rev

Voonlie 12-18 Months Girl Clothes Toddler Baby Girl Summer Clothes Outfits Crocheted Ruffle Camisole Pants Kids Clothing Set

Voonlie$14.754.7★159 rev

WZTYYDS Baby Girl First Birthday Outfit In My One Year Old Era Top Short Sleeve 1st Birthday Shirt + Casual Shorts Set (Pink 12-18 Months)

WZTYYDS$14.024.7★496 rev

Onesies Brand Baby Girls 3-Pack Romper Fox 18 Months

Onesies Brand$22.594.8★2,230 rev

Newest

by launch date

Simple Joys by Carters Baby 3-pack Snap-up Rompers navy dot/pink stripe/yellow dot 12 Months

Simple Joys by Carter's$20.2727,630 rev

2mo ago

Amazon Essentials x Sofia Grainge Baby Girls Cotton Short Sleeve Romper with Peter Pan Collar Pack of 2 Lemon/Uneven Stripe 12 Months

Amazon Essentials$16.46344 rev

2mo ago

Mubineo Toddler Baby Girl Summer Clothes Cute Ruffle Shirt Tops Dress Shorts Outfits Set Fruit Blouse Princess Outfit (Red Strawberry 9-12 Months)

Mubineo$13.7769 rev

5mo ago

Mioglrie Toddler Girl Summer Outfits 12 18 Months Baby Girl Clothes Rose Red Short Sleeve T-Shirt and Shorts Outfit with Cute Flower Clothing Set 12-18 Month

Mioglrie$9.97187 rev

7mo ago

XUANHAO Baby Girls Outfits Infant 12 Months Girl Clothes Summer Toddler Romper 18 Months with Sun Hat One-Piece Sleeveless Pink Flower Crochet Outfits for Girls Jumpsuit Sets 12-18 Month Girl Clothes

XUANHAO$11.4672 rev

7mo ago

What buyers say about 9-12 month girl clothes

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall22%

“not too tight”

Quality-Overall19%

“Good variety”

Color8%

“Color is cute”

Soft Feel6%

“still soft and breathable”

Comfort-Overall6%

“Very comfortable”

Material Quality5%

“The material is nice too it has a muslin look”

Value For Money5%

“Great value”

Advertised Vs Actual Product2%

“Very cute and as advertised”

Stretchability/Expandability/Elasticity2%

“Its also very stretchy”

Suitability Hot Weather2%

“Cute for the summer”

What buyers complain about

Size-Overall22%

“Size down”

Material Quality12%

“material looks a little cheap”

Quality-Overall11%

“Not made well”

Thickness5%

“Not thick may last for a little bit”

Stitch/Finish/Polish3%

“Really low quality stitching”

Color2%

“Not the color I expected”

Fastener Quality2%

“No snaps for easy diaper changing”

Smell2%

“Chemical smell”

Ease Of Use2%

“Inconvenient”

Transparency1%

“it's almost see through”

Top return reasons

Size-Overall57%

Material Quality10%

Length8%

Quality-Overall3%

Thin3%