Thread Report · 393 products analyzed · Updated July 19, 2026
What is PrettyLittleThing made of?
Short answer: mostly plastic. PrettyLittleThing relies heavily on synthetic fibres — 30.3% of their products are majority polyester. Here's the full breakdown.
Prefer the plain-English version? Read our PrettyLittleThingbuyer's guide →
According to Fibr's Thread Report (July 2026), 30.3% of PrettyLittleThing's 393 analysed products are majority-synthetic, with an average natural-fibre content of 21.9%.
PrettyLittleThing's shortss are 54.1% natural fibre, but their dresss are just 7.6%. That's a 47-point gap — where you shop within PrettyLittleThing matters as much as whether you shop there at all.
The full picture on PrettyLittleThing.
PrettyLittleThing leans heavily synthetic. Across 393 products, only 21.9% of fibre content on average is natural. About 30.3% of products are polyester-heavy, a notable but not dominant share. Just 10.7% of products hit the 95%+ natural fibre mark — most items contain significant synthetic content. The most common fibre across PrettyLittleThing products is Elastane, appearing in 55.5% of items.
How Products Break Down
- 70%
Synthetic
<30% natural fibre · 275 products
- 19.3%
Blend
30–85% natural fibre · 76 products
- 10.7%
Natural
85–100% natural fibre · 42 products
Most Common Fibres (% of products containing)
Where to buy (and avoid).
Not all categories at PrettyLittleThingare equal. Here's where the natural fibres are.
Mixed Bag · 40–70% natural
What we found.
Across 393 products analyzed, PrettyLittleThing averages 21.9% natural fibre content.
30.3% of PrettyLittleThing products are majority polyester — that's 119 items made mostly from plastic.
PrettyLittleThing shortss are their strongest category at 54.1% natural fibre (48 products).
Their weakest category: dresss at just 7.6% natural (33 products).
Only 10.7% of products (42 items) are 95%+ natural fibre.
| Category | Products | Avg Natural % |
|---|---|---|
| Shorts | 48 | 54.1% |
| Pants | 41 | 33.3% |
| Shirt | 54 | 27.2% |
| Jacket | 7 | 17.1% |
| Skirt | 7 | 8.6% |
| Dress | 33 | 7.6% |
Sample Products
A selection of PrettyLittleThing products from our database — from most natural to most synthetic. Click to view on the retailer's site.
The verdict.
PrettyLittleThing is a tough sell if you care about natural fabrics. With 30.3% of products being polyester-heavy, most of what they sell is effectively plastic clothing. If you do shop here, be very selective and always check the composition.
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Frequently asked questions.
What is PrettyLittleThing clothing made of?
Based on our analysis of 393 PrettyLittleThing products, the average garment is 21.9% natural fibre. The most common single fibre is Elastane (in 55.5% of products). The remaining material is typically synthetic — polyester, polyamide, or acrylic.
Is PrettyLittleThing cotton?
Sometimes — cotton appears in 27.5% of the 393 PrettyLittleThing products we analyzed, but it's usually blended with synthetics. Only 10.7% of items are nearly all-natural (95%+ natural fibre), so check the composition before assuming a piece is pure cotton.
Is PrettyLittleThing 100% cotton?
Some pieces are. Of the 393 PrettyLittleThing products we analyzed, 42 are 100% cotton (or near-pure, 95%+) — that's 10.7% of the catalog. The rest are blends.
How much polyester does PrettyLittleThing use?
30.3% of PrettyLittleThing products are polyester-heavy, meaning polyester makes up 50% or more of the garment. This is above average for fast fashion retailers.
Is PrettyLittleThing mostly synthetic?
30.3% of PrettyLittleThing products are polyester-heavy (50%+ polyester). Average natural fibre content is 21.9%, so the rest of the catalog is still leaning synthetic in most cases.
Does PrettyLittleThing use natural fabrics?
10.7% of PrettyLittleThing products are nearly all-natural (95%+ natural fibre). Only a small fraction of their range avoids synthetic fibres entirely.
Is PrettyLittleThing sustainable in terms of fabric?
Fabric composition is one factor in sustainability. With an average of 21.9% natural fibre, PrettyLittleThing is below average on this measure. Natural fibres generally biodegrade and shed fewer microplastics than synthetics.
Use this data.
The Thread Report is openly licensed. Cite it, download it, query it directly — just link back to the source page.
- Last updated
- Raw dataset (JSON)
- info.tryfibr.app/prettylittlething.json ↓
- Computed stats (JSON)
- /api/thread-report/prettylittlething
- About the dataset
- How it's built & how to cite it
- LLM index
- /llms.txt
Suggested citation
Fibr Thread Report — PrettyLittleThing, 2026-07-19. tryfibr.app/thread-report/prettylittlething
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