---
title: "Plus Size Sexy Costume — $2K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/plus-size-sexy-costume"
last_updated: "2026-08-11T20:27:57.851Z"
locale: en
meta:
description: "Niche score 44/100 · $2K/yr market · 299K searches/yr · $18.21 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $2K/yr market · 299K searches/yr · $18.21 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Plus Size Sexy Costume — $2K/yr Amazon US Niche (2026) - Flapen"
---
# **plus size sexy costume**
**Skip it**
A small market ($2K/yr) — this niche doesn't clear our bar today.
Market size 0Growth 24Conversion 0Competition 85Returns 45Price range 62Avg price 83Brand share 61Review moat 67Quality gap 68
**Competition**
**Great****30%**
top-5 click share — an open shelf
**Avg price**
**Great****$18.21**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****831.09**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****$5.65–$30.21**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****69%**
top-5 brand share — brands hold most of the demand
**Returns**
**Okay****3.4%**
return rate — above 5% kills the launch gate
**Growth**
**Bad****-2.0%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$2K**
$2K/yr · 299K searches
**Conversion**
**Bad****0.0%**
search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, plus size sexy costume is a $2K/yr Amazon United States market (299K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 44/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **plus size sexy costume market data**
- **Units sold / yr**
- **250–500**
- avg 0–100/product
- **Revenue / yr**
- **$5K–$9K**
- units × avg price
- **Conversion rate**
- **0.0%**
- **Avg BSR**
- **#17,833**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **45%**
- **Out of stock**
- **6.1%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **183 days**
## **Competition & brand share**
Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.
**Brands**
**23 **▼falling
**Sellers**
**28**
**Top-5 brand share**
**69%**
Top 20: 98%
**Top-5 click share**
**30%**
Top 20: 64%
**Open market**
**26%**
- Avidlove24% - SOLY HUX20% - Mixxmix10% - WDIRARA9% - OYOANGLE6% - Neohouny6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -2.0% search growth over the last 90 days.
35K25KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 14.0×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/plus-size-sexy-costume/trend)
## **Top plus size sexy costume search terms**
- **plus size sexy costume**69K/yr-11.5%0.1% conv. - **plus size cosplay lingerie**23K/yr-15.2%0.1% conv. - **plus size lingerie costumes**22K/yr+12.8%0.1% conv. - **sexy plus size costume**37K/yr-6.3%0.0% conv. - **sexy costumes for women plus size**32K/yr-45.9%0.1% conv. - **plus size sexy costumes**22K/yr+46.0%0.1% conv. - **cosplay lingerie plus size**5K/yr+2.1%0.0% conv. - **sexy plus size halloween costumes**12K/yr+427.8%0.0% conv. - **plus size lingerie costume**6K/yr-20.7%0.1% conv. - **sexy halloween costumes for women plus size**3K/yr+390.9%0.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/plus-size-sexy-costume/search-terms)
## **Top plus size sexy costume 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%3%$496%$989%$14712%$196101001K10K 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**SOLY HUX Womens Plus Size Cosplay Lingerie Set Nightgown Dress with Thongs Qipao Costume Outfits Black and Red 4X-Large Plus**SOLY HUX**$23.20**4.4★14 rev](https://www.amazon.com/dp/B0FZ9G7YKB) [2**Avidlove Womens Maid Costume Outfits Sexy Roleplay Lingerie Sleepwear Dress with Choker White Nurse XXL**Avidlove**$18.16**4.5★446 rev](https://www.amazon.com/dp/B0F3C633H8) [3**Mixxmix Plus Size Lingerie for Women Sexy Princess Lingerie Cosplay Costume Outfit with Bra and Panty Blue 2XL**Mixxmix**$19.51**4.3★115 rev](https://www.amazon.com/dp/B0FF9NH3LX) [4**Moon Wood Plus Size Fishnet Stockings with Bows Thigh High Stockings for Women Stay up Lingerie for Cosplay Tight**Moon Wood**$9.35**4.5★428 rev](https://www.amazon.com/dp/B0CLLTFQWX) [5**WDIRARA Womens Plus Size 2 Piece Contrast Lace Cosplay Lingerie Set Maid Costume Set Dress and Belt Black and White 3X-Large Plus**WDIRARA**$24.87**4.6★51 rev](https://www.amazon.com/dp/B0DFY676KC)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SOLY HUX Womens Plus Size Cosplay Lingerie Set Nightgown Dress with Thongs Qipao Costume Outfits Black and Red 4X-Large Plus**SOLY HUX**$23.20**14 rev7mo ago](https://www.amazon.com/dp/B0FZ9G7YKB) [**SOLY HUX Womens Plus Size Cosplay Lingerie Set Nightgown Dress with Thongs Qipao Costume Outfits Black and Red XX-Large Plus**SOLY HUX**$23.32**14 rev7mo ago](https://www.amazon.com/dp/B0FZ96DRPM) [**Neohouny Plus Size Sexy Costume for Women Exotic Lingerie Sets with Skirt XL**Neohouny**$19.99**35 rev8mo ago](https://www.amazon.com/dp/B0FZQH94NM) [**Mixxmix Plus Size Lingerie for Curvy Women Halloween Costume Underwire Outfit Garter Lingerie with Thong Set 4 Piece 3XL Purple**Mixxmix**$18.78**510 rev9mo ago](https://www.amazon.com/dp/B0FV76HQZ1) [**SOLY HUX Womens Plus Size Fishnet Lingerie Sexy Mesh Badydoll Hollow Out Halter Bra and Thong Panty Sets with Skirts Plain Black XX-Large Plus**SOLY HUX**$14.70**36 rev11mo ago](https://www.amazon.com/dp/B0FL6QLSG5)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Avidlove Sexy Lingerie for Women Plus Size School Girl Role Playing Outfit with Tie Top and Mini Pleated Skirt**Avidlove**$19.43**4.4★**▲ 101%**](https://www.amazon.com/dp/B0BWJNJGM5) [**Avidlove Womens Maid Costume Outfits Sexy Roleplay Lingerie Sleepwear Dress with Choker White Nurse XXL**Avidlove**$18.16**4.5★**▲ 97%**](https://www.amazon.com/dp/B0F3C633H8) [**Mixxmix Plus Size Lingerie for Curvy Women Halloween Costume Underwire Outfit Garter Lingerie with Thong Set 4 Piece 3XL Purple**Mixxmix**$18.78**4.2★**▲ 95%**](https://www.amazon.com/dp/B0FV76HQZ1) [**Avidlove Plus Size Schoolgirl Lingerie for Women Sexy Lingerie Roleplaying Outfit with Tie Top and Mini Skirt (Greenplus size 20 Plus)**Avidlove**$17.54**4.4★**▲ 93%**](https://www.amazon.com/dp/B09N2LQQ3Y) [**OYOANGLE Womens Plus Size 3 Pieces Lingerie Set Floral Embroidery Underwire Bra and Panty Babydoll Teddy Boudoir Outfit**OYOANGLE**$25.53**4.0★**▲ 82%**](https://www.amazon.com/dp/B0FK4WCV1K)
**~~View all trending →~~**
## **What buyers say about plus size sexy costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**29%
*“Fit great”*
**Comfort-Overall**13%
*“Super comfortable”*
**Quality-Overall**9%
*“Good quality”*
**Shape/Style**6%
*“Super sexy dress”*
**Soft Feel**5%
*“Super soft, and fits true to size”*
**Advertised Vs Actual Product**5%
*“Exactly as pictured”*
**Durability**5%
*“Durable”*
**Stretchability/Expandability/Elasticity**5%
*“has a good stretch”*
**Material Quality**2%
*“Fabric feels comfy too”*
**Value For Money**2%
*“Decent price”*
### **What buyers complain about **
**Size-Overall**32%
*“Too big”*
**Quality-Overall**10%
*“These are extremely cheaply made”*
**Strap/String Quality**5%
*“Poor strap placement”*
**Advertised Vs Actual Product**5%
*“Does not fit like in picture”*
**Chest Fit**4%
*“Only buy if breast are bigger than a C. Not for small chested people”*
**Durability**3%
*“I ended up causing a whole to rip”*
**Value For Money**3%
*“I expected it to be cheap”*
**Thigh Fit**3%
*“Too tight on the thighs”*
**Stretchability/Expandability/Elasticity**2%
*“fabric is very stretchy”*
**Material Quality**2%
*“The materials are very cheap for the amount of the product”*
### **Top return reasons **
**Size-Overall**53%
**Chest Fit**6%
**Length**5%
**Material Quality**5%
**Advertised Vs Actual Product**5%
**Waist Fit**4%
**Quality-Overall**3%
**Shape/Style**3%
**Thigh Fit**2%
**Width**2%
## **Common questions**
- **Is plus size sexy costume profitable to sell on Amazon United States?**
- The niche generates $2K/yr across 58 tracked products. 2 of 16 products launched in the last 360 days are still selling. 90-day search growth is -2.0%. Flapen's verdict: Skip it (44/100).
- **How competitive is the plus size sexy costume niche?**
- 23 brands and 28 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 69% of demand.
- **What do buyers complain about in plus size sexy costume?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Strap/String Quality. The return rate is 3.4%.
- **When does demand for plus size sexy costume peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 14.0× the quietest.
- **What does it cost to enter the plus size sexy costume niche?**
- Listings span $5.65–$30.21; the average listing price is $18.21 (sweet spot $15–$100). The average incumbent carries 831 reviews — the moat a new listing must climb.
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