SizeSignal

SizeSignal is a mobile + web AI sizing assistant that reduces the most common lingerie purchase failure: inconsistent sizing across brands and styles. Users answer a short guided fit quiz (band feel, cup spillage, strap slip, wire poke), optionally add two photos of a well-fitting bra laid flat (not worn), and enter one or two basic measurements. The app outputs a “best bet” size range per brand, plus sister sizes and style recommendations (balconette vs plunge, wire height, gore width). It also tracks what you bought and how it fit after a week, improving future recommendations. The business model is affiliate revenue and retailer integrations: send shoppers to partner stores with fewer returns. This is not magic—accuracy depends on feedback volume and brand data—but it can materially outperform generic size charts and reduce costly trial-and-error.