Underwear is also called intimate apparel and is worn next to skin, usually under other clothing. The five general types of underwear include boxer briefs, regular briefs, boxer shorts, trunks, and thongs. Lingerie is undergarments worn by women, and sometimes by men, and serves to enhance appearance and appeal and are considered highly fashionable. Five types of lingerie include panty, brassiere sleepwear, shape wear, and day wear.

Online Lingerie Market
According to the latest market report published by Persistence Market Research, titled “U.S. Market Study on Men’s Underwear and Women’s Lingerie: Driven by Proliferation of Modern Retail Format and Online Store during the Forecast Period”, the online Lingerie store segment is expected to be the most valuable segment in terms of revenue throughout the forecast period. The U.S. men’s undergarment market is estimated to be valued at US$ 3,236.4 Mn in 2015, and is expected to register a CAGR of 5.1% over the forecast period. On the other hand, the U.S. women’s Lingerie market revenue is expected to expand at a CAGR of 5.4% from 2015 to 2021.
U.S. women’s lingerie market is bifurcated on the basis of product type, price range, size, age group, and distribution channel. By product type, brassiere segment is expected to record highest CAGRs in terms of both value and volume between 2015 and 2021. By size, the medium segment is planned to contribute highest over the forecast period. On the base of the price range, premium range segment revenue is expected to register a CAGR of 6.8% over the period 2015–2021. On the basis of age-group, 65+ segment accounted for 19.7% revenue share in the U.S. women’s lingerie market in 2014, which is planned to expand at a CAGR of 3.9% from 2015 to 2021.