It's official - girl group f(x) is going to release their comeback teaser on the 30th! SM Entertainment has already been teasing us with photos of the girls after their new makeover. Sulli and Amber's photos were released first, and soon after,�Luna, Krystal and Victoria's photos were unveiled as well. With the release of teaser photos of the f(x) members which showed a complete 180 degree transformation, anticipation for their comeback & mini-album release on May 4 has been developing in Korea with their new unique looks. We're sure you're looking forward to this as well!