SISTAR's Soyu took part in the recording of JTBC's 'The Great Marriage,' where she did her mother-in-law's hair before guests came over to the house.  To people's surprise, she revealed that she actually was a certified hairstylist!

SEE ALSO: Dita, Jinny, and Minji announce departure from SECRET NUMBER following contract termination

She said, "I wanted to be a singer since I was young, but since it is so competitive, I became certified so I could still financially support myself in case I failed in the entertainment world."  She impressed her mother-in-law with her great styling skills and the viewers with her maturity.

Netizens commented, "That is cool," "Both pretty and sensible," and, "Among the SISTAR members, I was least aware of Soyu, but this awareness has increased thanks to the show."