A wardrobe malfunction is a clothing failure that accidentally exposes a person's intimate parts. It is different from deliberate incidents of indecent exposure or public flashing. Justin Timberlake first used the term when apologizing for the Super Bowl XXXVIII halftime show controversy during the 2004 Grammy Awards, saying that he accidentally revealed Janet Jackson's breast instead of just her brassiere. The phrase "wardrobe malfunction" was in turn used by the media to refer to the incident and entered pop culture. There was a long history of such incidents before the term was coined and it has since become common.

Indecent exposure is the deliberate public exposure by a person of a portion of their body in a manner contrary to local standards of appropriate behavior. Laws and social attitudes regarding indecent exposure vary significantly in different countries. It ranges from outright prohibition of the exposure of any body parts other than the hands or face to prohibition of exposure of certain body parts, such as the genital area, buttocks or breasts.