Tiffany from Girls' Generation appeared on SBS entertainment program 'But Really!' on the 15th and candidly shared her concerns. When the topic of Yuri's eye-smile video being trending came up, Tiffany revealed that she has been worrying about her own eye-smile recently because of Yuri. She explained, "In my teens, I greeted with eye-smiles facing straight, and in my twenties it changed slightly, but Yuri created the 30s version." She continued, "People I meet keep asking if I've seen that video, so I realized I need to upgrade my eye-smile." Meanwhile, 'Hyo-Ri-Su' (Hyoyeon, Yuri, and Sooyoung) has been generating buzz as the ultimate gathering of 'smile masters,' and former SM Entertainment chairman Lee Soo-man reportedly acknowledged their charm.