A sports bra is a bra that provides support to the breasts during physical exercise. Sturdier than typical bras, they minimize breast movement and alleviate discomfort. Many women wear sports bras to reduce pain and physical discomfort caused by breast movement during exercise. Some sports bras are designed to be worn as outerwear during exercise such as running. There are also sports bras with extra padding for exercises that involve some kind of trauma to the breasts.

Wearing underwear as outerwear is a fashion trend popularized by celebrities, sports and media. It began as a practical and comfortable variation of clothing, such as the T-shirt and the sleeveless shirt, but later evolved into provocative, controversial fashion statements. 21st century versions include the display of thongs and bras in women's clothing, and the display of underpants under low-slung pants in men. Wearing underwear as outerwear has historical antecedents in the display of undergarments in the sixteenth and seventeenth centuries.