"What Katie Did" is a British lingerie design house founded in 1999 by Katie Thomas). The brand specializes in vintage-inspired lingerie and fashion from the 1930s to the 1950s, including bullet bras, waist cinchers, corsets, seamed stockings, and suspender belts. The companys corsets are designed for waist training and are also suitable for occasional wear. The brand recreates designs from the 1950s, including the bullet bra, which has been worn by celebrities such as Madonna and Rihanna). The company has a boutique in London Portobello). The brand has been featured in various media outlets, including ABCs Nightline in 2012, and the founder, Katie Thomas, was nominated for Cosmopolitans Businesswoman of the Year in the same year).