Sistar member Bora confessed that all the members of Sistar "walk around naked" at their residence.

On January 17th, Bora starred in the SBS show 'Strong Heart' and revealed the behind story of Sistar which was that they all live in the nude together.

Bora said especially after showers they would walk around naked and that their house is "an only-girl-allowed place that even their manager can't come in".

She also confessed that "there is one man on the set right now who has visited our residence. He's an idol star" which caused murmurs around the audience.

Other celebrities on the set that day included Suh Joonyoung, Huh Cham, Jung So Nyuh, Go Euna, Kim Minhee, Ah Junghoon, Goo EunAeh, and Kang SeungHyun.