Their agency WS Entertainment updated fans on Yoo Sung Eun's official homepage on the 24th, "Coach Baek Ji Young who helped out as a visual director for Yoo Sung Eun's debut album 'Be OK' and Sung Eun ^^. How sweet,"�and released behind-the-scenes photos of Baek Ji Young personally giving her advice on Yoo Sung Eun's style.

According to WS Entertainment, Baek Ji Young participated in the hair, makeup, styling, and choreography as well as the album production for Yoo Sung Eun's debut album.

SEE ALSO: 'Voice Korea's Yoo Sung Eun shows off her powerful vocals in her debut song "Be Ok"