The Corset Era
Structured undergarments in Western fashion trace back to 16th-century "stays" — boned bodices worn to shape the torso to whatever silhouette was fashionable at the time, predating the word "corset" itself. The Victorian corset became the most recognizable and most contested version of this: it genuinely provided structural support and shaped the fashionable hourglass silhouette, while simultaneously becoming a flashpoint in debates about health (tight-lacing was linked, with some genuine and some exaggerated claims, to organ displacement and breathing restriction) and women's autonomy more broadly.
The Early Bra
The modern bra emerged in the early 20th century as corsets fell out of daily fashion use. Mary Phelps Jacob's 1914 patented design — essentially two handkerchiefs joined by ribbon — represented a radical simplification compared to full corsetry, prioritizing mobility over rigid shaping. From there, the underwire was patented in 1938, and standardized cup sizing (the A/B/C/D system still broadly in use) arrived around 1932 — before that, bras were largely sold in a single "size" per band measurement, with little accounting for cup volume at all.
Contemporary Engineering
Contemporary full-bust lingerie represents a fairly recent synthesis of two things that were separated for much of the 20th century: genuine structural engineering for larger sizes (proper cup construction, wider bands, appropriately placed underwire) and real aesthetic design (lace, color, silhouette) applied to those larger sizes rather than reserved for smaller ones. For most of the century, larger-cup lingerie was engineered for function with little attention to aesthetics, while aesthetically-focused lingerie was designed and sized for a narrower range of bodies — closing that gap has been the main practical achievement of full-bust lingerie brands over roughly the last two decades.
