Sticker is the third Korean-language and fourth overall studio album by South Korean boy band NCT 127. It was released on September 17, 2021, by SM Entertainment, distributed by Dreamus in South Korea and Virgin Music in United States. It follows their Japanese-language EP Loveholic, released in February 2021, and previous Korean-language studio album Neo Zone, released in March 2020. On October 25, the group released a repackaged version of Sticker, titled Favorite, which features three new tracks, including the lead single "Favorite (Vampire)".