K-Pop's most famous idol sisters, SNSD's Jessica and f(x)'s Krystal, has attracted a great amount of attention ever since photos of the two were shared through an online community site.  The pictures were taken with KakaoTalk, a popular Korean mobile messaging service. In the pictures, the two sisters show off their beauty while holding hands and affectionately posing for the camera with their faces right next to each other. Fans responded to the photos with comments like, "I want to KakaoTalk with them too", "I'm so envious of the two of them", "Jung sisters jjang!", and "They're both so cute!". Source + Photo: enews24 via Nate