f(x)‘s Sulli talked about her younger brother for the first time on the May 18 episode of KBS 2TV‘s ‘Entertainment Relay‘.

The show visited label mates and ‘SKT LTE‘ endorsement models, Super Junior‘s Kyuhyun, Girls’ Generation‘s YoonA, and Sulli on the set of their CF.

Sulli took this golden opportunity to talk about the photo of her cute-as-a-button younger brother which has been a hot topic online sharing, “He turned 3 years old this year. I am raising him as if he is my son. He has a lot of aegyo and he is so cute.”

Kyuhyun didn’t seem to have known that she had a brother and asked, “You have a younger sibling?”The host joked, “You guys must not be close” and Sulli confirmed that she does have a sibling and shared, “I don’t talk about it often. I indeed have a younger sibling.”

It seems Sulli’s cute charms run in the family!