f(x) performed at half time of an American football game last week.
f(x) Krystal American football
f(x) Sulli American football
f(x) Victoria American football
f(x) Luna American football
f(x) Amber American football
f(x) Krystal American football
f(x) Sulli American football
f(x) Victoria American football
Credit: Topstarnews (Korean)