Manufacturers use an hourglass like body shape when designing garments and a mathematical formula to create different sizes – but human body shape and size are individual.

Therefore, achieving a good fit can be a mix of measurement and judgement. Compression garments need measurement and judgement, compression bras rely more on measurement, fashion and sports lingerie are more complicated because measurement, judgement and personal preference affect choice. Breast form, partial form and shaper fitting depend on visual judgements about breast shape.

But achieving a good fit also needs an awareness of garment anatomy and an understanding of how to wear, adjust and care for the garment.

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