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How Do I Know What Size to Buy If I'm Between Sizes?

Author: Stylist and brand team at Tellar

Date: 2025

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The technical reality:

Body measurements rarely fall neatly into one size chart box.

When you're between sizes, the safest technical rule is:

  • Prioritis

    e the largest measurement (especially critical for fitted clothing like dresses or jeans)

  • Fabric matters: Stretch fabrics can accommodate smaller sizing better than rigid ones.

How Tellar.co.uk helps:

Tellar calculates your largest critical measurement (chest, waist, hips) and suggests the size that accommodates it.

It also accounts for fabric flexibility where available — so you know if you can size down safely or should size up for a structured garment.