LE SSERAFIM, ILLIT and KATSEYE are set to release the collaboration digital single “ICONIC BY MISTAKE” on June 12, 2026, at 1 p.m. KST. The release has been announced through official Weverse activity and covered by multiple entertainment and business outlets, with the rollout also including an official music video ahead of the audio release and a first television performance on Mnet’s “M Countdown.”12
The KATSEYE Weverse notice identifies the track as a special collaboration digital single and gives the global release time as June 12, 2026, at 12 a.m. ET and 1 p.m. KST, with the corresponding Pacific time listed as June 11, 2026, at 9 p.m. PT.1 The same official notice includes pre-save and pre-add information for the release.1
ICONIC BY MISTAKE Release Schedule

The release schedule is structured across several dates rather than a single launch moment. Soompi reported that concept photos were released on June 10, 2026, KST, while the official music video was scheduled to arrive before the audio release, on June 11, 2026, at 12 a.m. KST.3 A LE SSERAFIM Weverse media post dated June 9, 2026, also lists the official MV teaser for “ICONIC BY MISTAKE” and includes pre-save information.4
The first performance is also set before the digital single reaches its official release time. YTN reported that LE SSERAFIM, ILLIT and KATSEYE would present the song for the first time on Mnet’s “M Countdown” on June 11, 2026.2 BeyondPost and AlphaBiz separately reported the same first-stage timing, placing the performance one day ahead of the June 12 KST audio release.56
| Item | Confirmed Detail |
|---|---|
| Single title | “ICONIC BY MISTAKE” |
| Participating artists | LE SSERAFIM, ILLIT and KATSEYE |
| Format | Special collaboration digital single |
| Digital release time | June 12, 2026, 12 a.m. ET / 1 p.m. KST; June 11, 2026, 9 p.m. PT |
| Official MV timing | June 11, 2026, 12 a.m. KST, ahead of the audio release |
| First stage | June 11, 2026, on Mnet’s “M Countdown” |
| Pre-save / pre-add | Listed in official Weverse release materials |
Official Announcements and Label Context
The clearest timing details come from the KATSEYE Weverse release notice. In translated form, the notice says the special collaboration digital single “ICONIC BY MISTAKE” “will be released,” while listing the release time across ET, KST and PT.1 The wording confirms the format as a digital single rather than a physical album or a multi-track release in the provided materials.
The LE SSERAFIM Weverse media post provides a second official point in the rollout. It identifies the “ICONIC BY MISTAKE” official MV teaser, names LE SSERAFIM, ILLIT and KATSEYE in the collaboration context, and points users to pre-save information.4 The available source material does not provide a full tracklist or production credits.
Korean reports frame the project as a collaboration among girl groups connected to HYBE’s label structure. YTN reported that Source Music, Belift Lab and HYBE x Geffen Records announced the single through Weverse.2 AlphaBiz described the participating acts as girl groups under HYBE-related labels and reported the same June 12, 1 p.m. KST release timing.6
BeyondPost reported that the project had been previewed through logo motion and said the labels planned performance stages and additional content around the collaboration. In a translated press statement cited by the outlet, Source Music, Belift Lab and HYBE x Geffen Records said they planned to present “high-quality performance stages” as well as various content.5
What Is Known Before Release
The available information establishes the title, artists, format, release time, MV timing, pre-save activity and first performance schedule. It does not establish chart performance for “ICONIC BY MISTAKE,” because the single has not reached its stated digital release time in the provided materials.
The order of release activity is also clear. Concept photos were tied to June 10 KST, the official music video was scheduled for June 11 at 12 a.m. KST, the first “M Countdown” performance was reported for June 11, and the digital single release follows on June 12 at 1 p.m. KST.23
Quick FAQ
When is “ICONIC BY MISTAKE” released?
“ICONIC BY MISTAKE” is scheduled for release on June 12, 2026, at 1 p.m. KST, which corresponds to June 12 at 12 a.m. ET and June 11 at 9 p.m. PT.1
Does the music video come before the audio release?
Yes. The official music video was scheduled for June 11, 2026, at 12 a.m. KST, ahead of the digital single’s June 12 KST release time.3 !LE SSERAFIM ILLIT KATSEYE ICONIC BY MISTAKE release lineup Seoul stage concept For now, “ICONIC BY MISTAKE” is defined by a confirmed digital release, a staged pre-release rollout and a first performance scheduled before the audio launch. Further details, including any additional credits or post-release performance data, would need to come from later official announcements or release-platform information.
References
- [Notice] “ICONIC BY MISTAKE” 발매 안내 (Weverse KATSEYE)
- 하이브 걸그룹 연합 현실화…르세라핌·아일릿·캣츠아이 의기투합 (YTN, 2026-06-08)
- Update: LE SSERAFIM, ILLIT, And KATSEYE Drop Concept Photos For Collab Single "ICONIC BY MISTAKE" (Soompi, 2026-06-07)
- Weverse LE SSERAFIM Media – 'ICONIC BY MISTAKE' Official MV Teaser (Weverse LE SSERAFIM, 2026-06-09)
- [문화 이슈] 르세라핌·아일릿·캣츠아이…‘글로벌 아이콘’ 3팀의 만남 성사…디지털 싱글 ‘ICONIC BY MISTAKE’ 12일 발표 (BeyondPost, 2026-06-08)
- 하이브 소속 걸그룹 르세라핌·아일릿·캣츠아이 협업…신곡 'ICONIC BY MISTAKE' 발표 (AlphaBiz, 2026-06-08)