Jun Hyoseong (전효성; born October 13, 1989 in Cheongju, Chungcheongbuk-do, So… Read Full Bio ↴Jun Hyoseong (전효성; born October 13, 1989 in Cheongju, Chungcheongbuk-do, South Korea) often simply known as Hyoseong or Hyosung, is a South Korean idol singer and dancer. She is also the leader of Secret, a 4-member girl group from TS Entertainment.

In 2005 she was a finalist in television channel Mnet's "Battle Shinhwa" which led to her signing a recording contract with Good Entertainment. In 2007 she was to have debuted in the group "Five Girls", together with G.NA, Wonder Girls's Yubin, After School's Uee and former T-ara's member and current Spica's member Yang Jiwon. However, the group disbanded before they were able to debut due to the company's financial problems. Hyoseong was later discovered by TS Entertainment, through a show aired on SBS MTV, called "Diary of Five Girls", and spent two years with the company as a trainee. In 2009 she debuted, with Song Jieun, Han Sunhwa and Jung Hana, as the four member girl group Secret.

In 2014 it was confirmed that Hyoseong would be the second member of Secret, after Song Jieun, to make a solo debut. May 12, 2014, Hyoseong released her debut single album "Top Secret", with "Good-night Kiss" as the tittle track.

In May 7, 2015, Hyoseong released her 1st mini album titled "FANTASIA", with "반해 (Into You)" as the tittle track.