Lee Hyoeun 이효은 is the main vocal of Stellar.
Hyoeun was born on Tuesday, March 16, 1993, in Seoul.
Her blood type is O, the same as Gayoung and Junyool. She was born in the Chinese Year of the Rooster. Like Junyool, she's a Pisces.
At 170 cm or 5'7", she's the same height as Gayoung. They're the tallest members in Stellar, taller than Minhee and Junyool by 2 cm.
She attended Yangjae High School.