"Not Cute Anymore" (stylized in all caps) is a song recorded by South Korean girl group Illit for their first single album of the same name. It was released by Belift Lab on November 24, 2025, along with its B-side track "Not Me".
On October 27, 2025, Belift Lab announced through the release of a promotional calendar that Illit would be releasing their first single album Not Cute Anymore on November 24. "Not Cute Anymore" was confirmed to be the lead song, with the B-side track titled "Not Me", upon the reveal of the tracklist on November 3. On November 17, moving posters for the song's music video were released. Two music video teasers for the song were released on November 21 and 23 respectively. The song was released alongside its music video upon the release of the single album on November 24.
"Not Cute Anymore" was written and produced by Jasper Harris, with Sasha Alex Sloan and Youra participating in the writing. The song is described as a pop song based on reggae rhythms. The B-side "Not Me", co-written by Illit members Yunah, Minju and Moka, is built on an interpolation of the Ting Tings' "That's Not My Name", describing how people may see you in a certain way, but that you cannot be described by a single word, and it incorporates different nicknames the members call each other.
Illit performed "Not Cute Anymore" on three music programs in the first week of promotion: KBS's Music Bank on November 28, MBC's Show! Music Core on November 29, and SBS's Inkigayo on November 30.