I recognized one of f(x)'s Krystal's outfits in Dazed and Confused Magazine April 2015 issue. The fashion for her photoshoot overall was pretty spunky and wacky, much suited to f(x)'s image.
I also thought Krystal's poses were rather strange but maybe that's what the magazine is about guessing from the name.
Her top and bottom are from pushBUTTON's S/S 2015 collection.