F(x) came to cheer Girls' Generation (From SMTOWN Facebook)

Congratulations! Girls’ Generation’s ‘I GOT A BOY’ won the 1st place on KBS ‘Music Bank’ for two consecutive weeks.
And f(x) Victoria, Amber and Krystal made a surprise visit to cheer for Girls’ Generation at KBS ‘Music Bank’~!
[from FACEBOOK SMTOWN STAFF]

Source : SMTOWN Official Facebook