On the July 25th episode of SBS' 'One Night of TV Entertainment', Girls' Generation Sooyoung's older sister Choi Soo Jin made a surprise appearance.

The musical actress drew the attention of the studio not only for her resemblance to Sooyoung, but also because of her nearly identical voice. Choi Soo Jin said, "When I answer the phone for our mom, they'll often ask 'Are you Sooyoung or Soo Jin?' Sometimes even our mom will question, 'Is that you Sooyoung?' when I call."

Other celebrities mistook Choi Soo Jin's voice for Sooyoung's at first, only to be shocked to realize that the voice actually belonged to her older sister. Even Sooyoung seemed taken aback by the similarity and expressed her surprise saying, "I had no idea my sister's voice was so similar to mine."

An expert explained, "Because siblings or other people who live together have similar lifestyles and eating habits, there's more of a chance for their voices to be similar."

Source + Image: MyDaily via Naver