In May 2015, the year she turned 20, she appeared on Mnet’s Sixteen. In October, she debuted with the group TWICE and performed “Like Ooh-Ahh.”
The breakthrough yearIn April 2016, the year she turned 21, “Cheer Up” from the second mini album Page Two set off a “sha sha sha” craze, six months after her debut. In October, the third mini album’s “TT” came out, and the album passed 200,000 copies in under a month.
In May 2017, Signal became the first TWICE album to enter Billboard’s Heatseekers Albums chart. In July the group made its official debut in Japan, and in October the first full-length album Twicetagram came out with “Likey.”
In 2018, the group came back twice, with What Is Love? and Yes or Yes. In April 2019, “Fancy” passed 150,000 first-week copies, a first for a girl group, and in May the Twicelights world tour opened with a show at the Olympic Gymnastics Arena in Seoul.
In February 2020, they signed a partnership with Republic Records, and in June More & More first entered the Billboard 200. In October, “I Can’t Stop Me” from the second full-length album Eyes Wide Open continued a run of 14 straight hits. In 2021, they released their first English-language single, “The Feels.”
In June 2022, the year she turned 27, she released the first solo mini album Im Nayeon with “Pop!” and it entered the U.S. Billboard 200 at No. 7. In July, all members re-signed with JYP, and in August the first album with all members after re-signing, Between 1&2, came out.
In June 2023, the group became the first girl group to sell out a solo concert at SoFi Stadium in Los Angeles. In February 2024, the mini album With You-th came out, and in June the second solo mini album NA reached No. 7 on the Billboard 200 again. In July, the group played Nissan Stadium in Japan, a first for a K-pop female act.
In October 2025, the group released the tenth anniversary album Ten and she received a Prime Minister’s Commendation at the Popular Culture and Arts Awards. On her birthday in 2026, the year she turned 31, she opened a personal YouTube channel, Im Nayeon.
Nayeon (birth name Im Na-yeon, born Sep 22, 1995) debuted with the group TWICE on Oct 20, 2015, the year she turned 20, and became widely known on Apr 25, 2016, the year she turned 21, when “Cheer Up” set off a “sha sha sha” craze. In 2022, the year she turned 27, her first solo album Im Nayeon reached No. 7 on the U.S. Billboard 200.
Ages are by calendar year (the year minus the birth year), birthdays aside.
The first episode of Sixteen, a debut project to choose the members of JYP Entertainment’s new girl group TWICE, aired. She appeared as the oldest of the trainees.
Source 04 · Ajunews (Korean) · Sixteen, episode 1 · opens in a new tabHeld a debut showcase at AX Hall in Gwangjin District, Seoul, and performed “Like Ooh-Ahh,” the title track of the debut album The Story Begins.
Source 01 · bnt News (Korean) · TWICE member profiles · opens in a new tabSource 02 · Kukmin Ilbo (Korean) · Getting to know TWICE · opens in a new tabSource 03 · Korea Economic Daily (Korean) · TWICE debuts · opens in a new tabThe title track “Cheer Up” from the second mini album Page Two set off what Xportsnews called a “sha sha sha” craze, six months after her debut.
The album passed 200,000 copies in under a month after release. Around the same time the “Cheer Up” music video passed 100 million views on YouTube.
Source 06 · Sports Chosun (Korean) · “TT” passes 100 million views and 200,000 copies · opens in a new tabReturned with the title track “Signal,” produced by J.Y. Park. It entered Billboard’s Heatseekers Albums chart at No. 11, the first TWICE album on that chart.
Source 07 · Segye Ilbo (Korean) · Signal on Heatseekers · opens in a new tabHeld two debut showcases, Touchdown in Japan, at Tokyo Metropolitan Gymnasium for about 15,000 people. The Japanese debut album #TWICE was No. 1 on the Oricon chart.
Source 08 · Star News (Korean) · Japanese debut showcase · opens in a new tabSource 09 · Yonhap News Agency (Korean) · Japanese debut album tops Oricon · opens in a new tab“Likey,” the title track of the first full-length album Twicetagram, was No. 1 on six music charts including Genie, Naver and Bugs.
Source 10 · Yonhap News Agency (Korean) · “Likey” tops six charts · opens in a new tabReturned four months after the previous album and held a showcase at Yes24 Live Hall in Seoul.
Source 11 · Sports Q (Korean) · Comeback with What Is Love? · opens in a new tabReturned with the title track “Yes or Yes,” the group’s first mini album since What Is Love? seven months earlier.
Source 12 · Herald Business (Korean) · Comeback with Yes or Yes · opens in a new tabReleased “Fancy,” the title track of the seventh mini album Fancy You. By Hanteo Chart it sold more than 150,000 copies in its first week, a first for a girl group.
Source 13 · Top Star News (Korean) · “Fancy” sells 150,000 in its first week · opens in a new tabPlayed the Seoul show of the Twicelights world tour at the Olympic Gymnastics Arena (KSPO Dome). It was the group’s first solo concert at the venue since its debut.
Source 14 · Maeil Business (Korean) · Twicelights in Seoul · opens in a new tabSigned a strategic partnership with Republic Records, part of Universal Music, for overseas activities.
Source 15 · Seoul Economic Daily (Korean) · Partnership with Republic Records · opens in a new tabThe ninth mini album More & More entered the U.S. Billboard 200 at No. 200, the group’s first appearance on the chart.
Source 16 · Seoul Economic Daily (Korean) · “More & More” first enters the Billboard chart · opens in a new tabWith the title track “I Can’t Stop Me,” the group extended a run of 14 straight hits that began with its debut song.
Source 17 · Korea Economic Daily (Korean) · 14 straight hits through “I Can’t Stop Me” · opens in a new tabIt was No. 1 on iTunes song charts in 35 countries, and the group performed it for the first time on NBC’s The Tonight Show Starring Jimmy Fallon in the U.S.
Source 18 · YTN (Korean) · “The Feels” on iTunes in 35 countries · opens in a new tabReleased the first solo mini album Im Nayeon and its title track “Pop!” It reached No. 7 on the U.S. Billboard 200, a first-week result no K-pop solo artist had reached before.
Source 19 · OSEN (Korean) · “Pop!” music video passes 100 million views · opens in a new tabSource 20 · Yonhap News Agency (Korean) · Im Nayeon at No. 7 on the Billboard 200 · opens in a new tabWith their contracts due to expire that fall, all members re-signed with JYP Entertainment.
Source 21 · Star News (Korean) · All members re-sign · opens in a new tabReturned with all members on the eleventh mini album Between 1&2, the first album after all members re-signed.
Source 22 · Newsis (Korean) · Between 1&2, first album with all members · opens in a new tabPlayed a Ready to Be concert, part of the fifth world tour, at SoFi Stadium in Los Angeles for 50,000 people. TWICE became the first girl group to sell out the stadium, and the North American leg drew 250,000 people over 13 shows in nine cities, the group’s largest.
Source 23 · Maeil Business (Korean) · SoFi Stadium sells out · opens in a new tabSource 24 · My Daily (Korean) · North American tour draws 250,000 · opens in a new tabReturned with the title track “One Spark.” It was the group’s first activity with all members in about a year, since the mini album Ready to Be.
Source 25 · Sports Kyunghyang (Korean) · TWICE returns with With You-th · opens in a new tabReleased the solo mini album NA and its title track “ABCD.” Like Im Nayeon, it reached No. 7 on the U.S. Billboard 200.
Source 26 · Yonhap News Agency (Korean) · Nayeon releases NA · opens in a new tabSource 27 · Newsen (Korean) · NA at No. 7 on the Billboard 200 · opens in a new tabSource 32 · KBS Entertainment (Korean) · Nayeon’s NA out today · opens in a new tabHeld two days of concerts, Ready to Be in Japan Special, at Nissan Stadium in Kanagawa, Japan. TWICE were the first K-pop female act to play the stadium, and the shows ended the fifth world tour.
Source 28 · Yonhap News Agency (Korean) · First show at Nissan Stadium · opens in a new tabReleased the anniversary special album Ten: The Story Goes On. It reached No. 11 on the U.S. Billboard 200, making them the first K-pop girl group with 10 albums on the chart.
Source 29 · Maeil Business (Korean) · Ten at No. 11 on the Billboard 200 · opens in a new tabReceived a Prime Minister’s Commendation at the 2025 Korean Popular Culture and Arts Awards at the National Theater in Seoul.
Source 30 · My Daily (Korean) · Prime Minister’s Commendation · opens in a new tabOpened a personal YouTube channel, Im Nayeon, on her birthday. The handle, @IM_NAYEON_0922, includes her birthday.
Source 31 · Sports Kyunghyang (Korean) · Opens a personal YouTube channel · opens in a new tabEND OF SELECTED RECORDSSelected records, 2015–2026 · not a complete list of work. “Key moment” is an editorial label, not a measure of success.
What did they do, and at what age?
AgeTrail lines up the key moments of a life by age.
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Music · South Korea
Sep 22, 1995 —
Ages are counted from the birth year 1995: the year of the event minus 1995, birthdays aside. “Key moment” labels and the connecting story are AgeTrail's editorial reading.
Fact-checked: 2026.09.29 · An independent archive, not affiliated with the person or their agency.