Wonder Girls' Hyerim confessed that she had no clue that she would join the Wonder Girls. Hyerim and her groupmates guested on the upcoming broadcast of SBS's 'Strong Heart', where they shared stories from their career. During the recording, Hyerim revealed, "Before debuting, I promoted for a while in China under the name 'Sisters' with miss A's Jia and Fei unnie. Even when I was in discussion with my boss, J.Y. Park, I told him that I wanted to debut with my unnie's, so I had no clue that I would join the Wonder Girls." After ex-member Sunmi decided to pursue her college education in the beginning of last year, Hyerim was chosen to join as a new member of the group. Be sure to catch the complete story, which will be broadcast on the November 29th episode of 'Strong Heart'. Source: Star News via Nate