Jun Hyosung (Korean name 전효성, also romanized as Jeon Hyoseong or a mix between both forms) is a South Korean idol singer, who is the leader, lead vocalist and main dancer of the K-Pop girl group Secret, managed by the TS Entertainment record label. Hyosung has been developing her advertising and modelling career since 2009, and started her parallel musical solo activities in May 2014 with the release of her first mini-album "Top Secret" with the lead title track "Good-Night Kiss".