Hyein

Lee Hye-in (, ; born 21 April 2008), known mononymously as Hyein, is a South Korean singer and former child model. She began her musical career at nine years old as a member of the South Korean children's groups U.sso Girl and Play with Me Club. She later debuted as a member of South Korean girl group NewJeans, formed by ADOR in July 2022.

2008–2019: Early life and modeling career
Lee Hye-in was born on 21 April 2008, in Michuhol-gu, Incheon, South Korea. Hyein attended Munhak Elementary School, but later dropped out soon after taking the school's qualification exam. As a former child model, she worked as the 7th model for the snapback brand PRANKERS in August 2019. Hyein thereafter walked the runway at age eight during the 2019 Mercedes Benz Fashion Week held at Moscow, Russia in October. In December, she won the grand prize for the 2019 Little Look of the Year, a competition for child models. Hyein has since served as an advertising model for brands including Tara & Co. and Emart's No Brand.

2017–2021: U.SSO Girl and Play With Me Club
In July 2017, Hyein was announced as a member of the children's girl group U.sso Girl alongside Rora of BabyMonster under the stage name U.Jeong. The group debuted on 7 November 2017, with their first digital single, "Go Go Sing". Hyein would later depart from the group sometime in 2018.

On 11 January 2019, she was revealed as a member of the children's co-ed group Play with Me Club. The group made their debut with the first digital single, "Let's Play", on 16 December 2020. During this period, she made an appearance on the EBS children's television show ''Live Talk! Talk! Boni Hani!'' as a member of the co-ed dance group SIXDANCE. Hyein, along with fellow member Chang-hyeon, graduated from the group in May 2021.

2022–present: Debut in NewJeans and solo activities


On 1 July 2022, ADOR teased the launch of their first girl group, NewJeans, by posting three animated videos of the numbers "22", "7" and "22" on their social media accounts, fueling speculation that content would be released on 22 July. Hyein debuted alongside the group with the surprise-released music video for their debut single "Attention" on 22 July 2022, without any prior promotion or information regarding the group's lineup.

In February 2024, Hyein featured along with singer Cho Won-sun on the track "Shh..." from The Winning, the sixth extended play by singer-songwriter IU.

Endorsements
On 30 December 2022, Louis Vuitton announced Hyein as one of their new global house ambassadors, becoming the youngest ambassador for the brand at 14 years old. She has also attended Paris Fashion Week representing Louis Vuitton. In April 2023, Hyein became the youngest cover girl to be on the cover of Harper's Bazaar Korea.