PrettyLittleThing: May 2026

Based on our analysis of 337 PrettyLittleThing products, the average garment is 19.6% natural fibre. The most common single fibre is Elastane (in 56.7% of products). The remaining material is typically synthetic — polyester, polyamide, or acrylic.

Sometimes — cotton appears in 23.7% of the 337 PrettyLittleThing products we analyzed, but it's usually blended with synthetics. Only 9.8% of items are nearly all-natural (95%+ natural fibre), so check the composition before assuming a piece is pure cotton.

Effectively no. We didn't find any PrettyLittleThing products that are 100% cotton (or near-pure, 95%+) in our database. Cotton at PrettyLittleThing is almost always blended with elastane, polyester, or other fibres.

32.9% of PrettyLittleThing products are polyester-heavy, meaning polyester makes up 50% or more of the garment. This is above average for fast fashion retailers.

32.9% of PrettyLittleThing products are polyester-heavy (50%+ polyester). Average natural fibre content is 19.6%, so the rest of the catalog is still leaning synthetic in most cases.

9.8% of PrettyLittleThing products are nearly all-natural (95%+ natural fibre). Only a small fraction of their range avoids synthetic fibres entirely.

Fabric composition is one factor in sustainability. With an average of 19.6% natural fibre, PrettyLittleThing is below average on this measure. Natural fibres generally biodegrade and shed fewer microplastics than synthetics.