Girls' Generation's Sooyoung says she once fought with Tiffany because of a hamburger
Tiffany began,"We didn't have time to eat because of our busy tour schedule, appearing on various programs, and such. One time, Sooyoung was eating a hamburger and I asked for a bite. I had full makeup on at the time so I smeared lipstick on the burger. When she saw what I did, Sooyoung said, 'If you're gonna eat it, do you mind not putting lipstick all over it?'"