75
Seasons
All seasonsAbout
Celebrities become an Unnie (older sister) for a day to a younger celebrity spending 24 hours together, sharing one bed and one blanket.
First Aired
May 4, 2018
Last Aired
Sep 7, 2018
Seasons
1
Episodes
19
Network
JTBC4
Studio
JTBC PLUS
Original Title
비밀언니
Original Language
Korean
