"Copycat" is a song recorded by American singer Billie Eilish It was released by Darkroom and Interscope Records as the fourth single from Eilish's debut studio EP, Don't Smile at Me. Eilish and her brother Finneas O'Connell co-wrote "Copycat", with the latter producing it solely. Musically an electropop and electronic track, with hip hop-influenced instrumentation, the song was heavily inspired by someone who kept on copying Eilish and what she did. Commercially, the song peaked at number 12 on the Billboard Bubbling Under Hot 100 chart and number 100 on the Canadian Hot 100. The song has been awarded several certifications, notably a double platinum award from the Mexican Association of Producers of Phonograms and Videograms, A.C. (AMPROFON). The song was performed live during Eilish's 2019 When We All Fall Asleep Tour and her Where Do We Go? World Tour in 2020. The Sofi Tukker remix was officially released on January 12, 2018.