H4 London Fit & Sizing Guide: How to Choose the Right Size

H4 London follows standard UK sizing, with many pieces designed to sit oversized or deconstructed for an intentional, relaxed silhouette. If you are between sizes, we recommend sizing up. This guide explains how our pieces are cut, how to measure yourself, and how to choose with confidence.

How H4 London sizing works

Our garments are based on standard UK women’s sizing. Because much of the collection is intentionally oversized, asymmetric or draped, the way a piece is designed to fit matters as much as your measurements. Each product page includes a size guide — always check it before ordering.

How to measure yourself

With a soft tape measure, take three measurements:

• Bust — around the fullest part, keeping the tape level.
• Waist — around the narrowest part of your natural waist.
• Hips — around the fullest part.

Compare your measurements to the size guide on the product page rather than relying on the size you usually buy elsewhere.

Fit by category

• Outerwear — designed to layer, often oversized. Size for what you will wear underneath.
• Dresses — range from fitted to draped; check each product’s guide.
• Tops — many are relaxed or voluminous by design.
• Trousers — offered in tailored and wide-leg fits.

Between sizes? Size up

Our oversized and deconstructed pieces are designed to fall away from the body. If you are between two sizes, or you prefer a more relaxed drape, choose the larger size.

Easy returns

If the fit is not right, you have 14 days from delivery to return unworn items with their tags attached. Orders are dispatched within one business day, and shipping is free on UK orders over £70. For help choosing a size, email info@h4london.com.

Frequently asked questions

What sizing does H4 London use?

Standard UK women’s sizing. Each product page includes a specific size guide.

Should I size up at H4 London?

If you are between sizes or prefer a relaxed fit, yes — many pieces are designed to be oversized, so we recommend sizing up.

What is H4 London’s return policy?

Returns are accepted within 14 days of delivery on unworn items with tags attached. Customers are responsible for return shipping.

How long does delivery take?

Orders dispatch within one business day. UK delivery takes 2–5 working days; international 5–10 business days. UK orders over £70 ship free.