Why do bras fit differently in different brands?

Bras fit differently across brands because the industry lacks a universal sizing standard, with each manufacturer designing their products using unique fit models, patterns, and construction techniques. The materials used directly affect how a garment provides compression, shaping, and support throughout your day.

Cup volumes vary relative to band sizes, which means C Cup Bras in one brand can offer different coverage than a 34C in another brand, even though they share the same size label. International variations add complexity, as sizing systems differ between countries, with UK, US, and European measurements following their own distinct standards.