f(x) to make a comeback with "Rum Pum Pum Pum" + new group and individual teaser photos

http://www.youtube.com/watch?v=MlFOLQ93BOY&feature=c4-overview&list=LLqs0F_IDaoq9Uz69qCOUnXw

can't wait for the song to release <3 

OMG Amber

I thought Amber was going to grow her hair. :(

what happened to "amber growing her hair"?.... was it just a rumour?... it look super short :(.. I was anticipating it

....okay...nice pics :3.....but ......the song´s tittle sounds so funny xD ....

 Ah.... I really like them.. :))) can't wait.....

my sister: oh look there is a boy in the ending

me: NO! -_- that's amber

my sister: wow she is cool

Who's the boy in long socks?

victoria has a nice rack

I thought New Group = New girl/boy group from SME for second. Lol Oh btw, I thought Amber was suppose to grow out her hair for the comeback? it's still short...

It's about time for the best to comeback and I'm anticipating this one as the most remarkable comeback of the year.

Cant wait for their comeback!!!!

Can't wait....but the name "Rum Pum Pum Pum" sounds stupid

f(x) is back!

Is it just me who thought that the last pic was Jonghyun?!! My reaction was like  (What are U doing here Jonghyuniiiii)!!!... After a few minutes I realised that she was Amber!!! 

Hope it doesn't sound anything like the "Pon Pon Pon" song o . o

Sulli really suits short hair. I hope she keeps it this length.

After waiting and waiting now the comeback is soo sudden wasn't it just yesterday when they revealed the intro teaser for the comeback concept lol, but nonetheless I am happy they are returning.

AMBER!!!!!!!!!!!!!!!!!!!!