Jessica Jung from SNSD and her Sister Krystal Jung from F(x) are Sisters there so sweet and close to each other there so funny especially then there in there house they eat a lot too. They really don't have plastic surgery on. Not all kpop idols have a plastic surgery on. Jessica's group is so famous than Krystal. Krystal's group is not too famous compair to Jessica's group. All kpop idols is rich and they care on there health too. Kamsahamdida~!! Comment down your bias~!!