[2] On February 12, the agency stated that their upcoming EP "will show off its charm and maturity by focusing on a chic and charismatic performance with a hip-hop, EDM and dance-based composition".

[8] The EP was released on February 22, 2018, through several music portals, including MelOn in South Korea and iTunes for the global market.

[9][10] The song expresses the woman's mind to seduce the other person with a fashion item called black dress.

[14] Music show promotions commenced on February 22, on Mnet's, M Countdown, performing the title song, "Black Dress".

Black Dress debuted at number 11 on Billboard's World Albums Chart, on the week ending March 3, 2018.