---
title: "Newborn Costume Girl — $7K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/newborn-costume-girl"
last_updated: "2026-08-06T03:58:34.692Z"
locale: en
meta:
description: "Niche score 40/100 · $7K/yr market · 156K searches/yr · $18.23 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · $7K/yr market · 156K searches/yr · $18.23 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Newborn Costume Girl — $7K/yr Amazon US Niche (2026) - Flapen"
---
# **newborn costume girl**
**Skip it**
A small market ($7K/yr) — this niche doesn't clear our bar today.
Market size 2Growth 34Conversion 3Competition 66Returns 21Price range 80Avg price 83Brand share 80Review moat 60Quality gap 27
**Avg price**
**Great****$18.23**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****55%**
top-5 brand share — no brand owns this niche
**Price range**
**Great****$8.33–$44.88**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****45%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Good****1,084.74**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+7.6%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Returns**
**Bad****6.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****0.3%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$7K**
$7K/yr · 156K searches
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, newborn costume girl is a $7K/yr Amazon United States market (156K searches/yr). The top 5 brands hold 55% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 40/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **newborn costume girl market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$9K–$14K**
- units × avg price
- **Conversion rate**
- **0.3%**
- **Avg BSR**
- **#488**
- **Page quality**
- **0%**
- **Prime**
- **95%**
- **Sponsored**
- **72%**
- **Out of stock**
- **10.8%**
- **Avg brand age**
- **40 months**
- **Avg seller age**
- **190 days**
## **Competition & brand share**
The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**30 **▼falling
**Sellers**
**36**
**Top-5 brand share**
**55%**
Top 20: 89%
**Top-5 click share**
**45%**
Top 20: 79%
**Open market**
**41%**
- M&G House20% - AiWMGL11% - YINGISFITM10% - Dcohmch7% - Disney6% - citgeett4%
## **Demand & seasonality**
Weekly Amazon search volume, last 88 weeks — +7.6% search growth over the last 90 days.
30K20KSpike '25Spike '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 100.2×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/newborn-costume-girl/trend)
## **Top newborn costume girl search terms**
- **newborn costume girl**35K/yr+21.4%0.0% conv. - **newborn baby costume**11K/yr-5.0%0.0% conv. - **disfraz para bebe 0-3**8K/yr-22.0%0.4% conv. - **baby boy costumes 0-3 months**10K/yr+28.1%0.0% conv. - **baby girl costumes 0-3 months**12K/yr+34.2%0.0% conv. - **preemie halloween costume**25K/yr+59.5%0.0% conv. - **newborn girl costume**10K/yr-37.8%0.0% conv. - **new born costumes girl**5K/yr+20.0%0.0% conv. - **preemie halloween**6K/yr+32.7%0.0% conv. - **0-3 months halloween costume girl**8K/yr+206.7%0.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/newborn-costume-girl/search-terms)
## **Top newborn costume girl 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.
0%5%$35610%$71115%$1K20%$1K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**M&G House Newborn Photography Props Bathrobe Outfits Girl Baby Robe Bath Towel Costume Sets 0-6 Months(Pink)**M&G House**$16.41**4.7★2,024 rev](https://www.amazon.com/dp/B07DH335F2) [2**AiWMGL Newborn Baby Bear Outfit Suit With Fold-Over Mittens and Footies Girls Boys 0-3 Months Winter Fleece Clothes Suit Hooded Jumpsuit Romper Snowsuit**AiWMGL**$19.72**4.5★1,465 rev](https://www.amazon.com/dp/B0D73L76HR) [3**YINGISFITM My First Halloween Baby Girl Outfit Newborn Pumpkin Bubble Romper Infant Jumpsuit Cute Girls Pumpkin Clothes (Pumpkin Face 0-3 Months)**YINGISFITM**$14.75**4.6★294 rev](https://www.amazon.com/dp/B0D66YJ2RK) [4**Baby Boy Girl Dinosaur Costume Cute Sleeveless Romper with Hat Newborn Infant Halloween Cosplay Clothes (Emerald 0-3 Months)**Dcohmch**$19.96**4.6★167 rev](https://www.amazon.com/dp/B0FFGRBPC9) [5**citgeett My First Halloween Baby Girl Outfit Cutest Pumpkin Long Sleeve Romper Jumpsuit Newborn Girl Outfits Clothes (halloween newborn outfit 0-3 Months)**citgeett**$13.29**4.3★77 rev](https://www.amazon.com/dp/B0F8VWD1VH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Baby Boy Girl Dinosaur Costume Cute Sleeveless Romper with Hat Newborn Infant Halloween Cosplay Clothes (Pink 0-3 Months)**Dcohmch**$19.90**167 rev9mo ago](https://www.amazon.com/dp/B0FT2Z855H) [**Wosixima Infant Mouse Costume Outfit Suit Bodysuit First Birthday Clothes 4-Piece Set with Suit Bodysuit Shorts Suspenders and Ears 0-3 Months**Wosixima**$18.82**272 rev10mo ago](https://www.amazon.com/dp/B0FFLX8S77) [**Bibimom Newborn Baby Girl Clothes Cotton Baby Girl Outfits New Born Clothes 0-3 Months Pink Cute Romper Photoshoot Hospital Outfit Jumpsuit Spring Fall Winter**Bibimom**$8.33**108 rev11mo ago](https://www.amazon.com/dp/B0FL2HBJ8B) [**Baby Boy Girl Dinosaur Costume Cute Sleeveless Romper with Hat Newborn Infant Halloween Cosplay Clothes (Emerald 0-3 Months)**Dcohmch**$19.96**167 rev1y ago](https://www.amazon.com/dp/B0FFGRBPC9) [**Licupiee Infant Boy Girl Ladybug Romper Hooded Long Sleeve Fleece Bee Jumpsuit Newborn Baby Halloween Costume Animal Clothes (Red 0-3 Months)**Licupiee**$22.87**32 rev1y ago](https://www.amazon.com/dp/B0FCRV4TBG)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Baby Boy Girl Dinosaur Costume Cute Sleeveless Romper with Hat Newborn Infant Halloween Cosplay Clothes (Pink 0-3 Months)**Dcohmch**$19.90**4.6★**▲ 332%**](https://www.amazon.com/dp/B0FT2Z855H) [**Bibimom Newborn Baby Girl Clothes Cotton Baby Girl Outfits New Born Clothes 0-3 Months Pink Cute Romper Photoshoot Hospital Outfit Jumpsuit Spring Fall Winter**Bibimom**$8.33**4.6★**▲ 331%**](https://www.amazon.com/dp/B0FL2HBJ8B) [**YINGISFITM Newborn Infant Baby Girl Clothes Fall Winter Long Sleeve Bubble Romper Floral Bow One Piece Jumpsuit Cute Outfits (Blue 3-6 Months)**YINGISFITM**$15.07**4.6★**▲ 324%**](https://www.amazon.com/dp/B0F91KJ8K6) [**M&G House Newborn Photography Props - Bathrobe Outfits for Baby Photoshoots - Girl Baby Robe - Newborn Costume - White (0-6 Months)**M&G House**$15.64**4.7★**▲ 311%**](https://www.amazon.com/dp/B07CP6WH97) [**Disney Winnie the Pooh Newborn Baby Boys 4 Piece Outfit Set: Bodysuit Pants Bib Hat Yellow 0-3 Months**Disney**$20.36**4.8★**▲ 309%**](https://www.amazon.com/dp/B092RVXK2H)
**~~View all trending →~~**
## **What buyers say about newborn costume girl**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Soft Feel**20%
*“The material is soft”*
**Quality-Overall**17%
*“the quality was amazing for the babys 3 months pics”*
**Size-Overall**14%
*“Fit well”*
**Value For Money**7%
*“Worth the buy”*
**Warmth**7%
*“It kept my grand daughter warm and snuggly”*
**Color**4%
*“Beautiful color and soft”*
**Material Quality**4%
*“Elegant, good material”*
**Advertised Vs Actual Product**4%
*“exactly as described”*
**Design-Overall**4%
*“Design is beautiful”*
**Comfort-Overall**3%
*“Cute cuddly and comfy”*
### **What buyers complain about **
**Size-Overall**32%
*“Smaller than normal size”*
**Quality-Overall**14%
*“Poor quality”*
**Material Quality**8%
*“cheap fabric”*
**Comfort-Overall**4%
*“Has no comfort or warmth value”*
**Precious Gemstone**3%
*“I few gems fell off the crown”*
**Smell**3%
*“comes with a very strong chemical smell out the box”*
**Warmth**3%
*“he was too warm”*
**Shrinkage Resistance**3%
*“They shrink every time you wash them no matter what type of water you use”*
**Hard Feel**3%
*“Bad/rough quality”*
**Thickness**3%
*“its somewhat thin”*
### **Top return reasons **
**Size-Overall**65%
**Length**7%
**Material Quality**7%
**Quality-Overall**4%
**Advertised Vs Actual Product**4%
**Thin**2%
**Value For Money**1%
**Color**1%
**Shoulder Fit**1%
**Sleeve Fit**1%
## **Common questions**
- **Is newborn costume girl profitable to sell on Amazon United States?**
- The niche generates $7K/yr across 39 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +7.6%. Flapen's verdict: Skip it (40/100).
- **How competitive is the newborn costume girl niche?**
- 30 brands and 36 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 55% of demand.
- **What do buyers complain about in newborn costume girl?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Material Quality. The return rate is 6.1% — above our launch gate.
- **When does demand for newborn costume girl peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 100.2× the quietest.
- **What does it cost to enter the newborn costume girl niche?**
- Listings span $8.33–$44.88; the average listing price is $18.23 (sweet spot $15–$100). The average incumbent carries 1,085 reviews — the moat a new listing must climb.
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