Physical

If we talk how about Iwata Karen look is how the special white skin. Among the 48 Member she is the one who have the most flawless white skin. Because of that Fujita Nana called her daifuku body which like "mochi" resemble how other Kojima who has title "Marsmallow". I don`t how she have whitest skin maybe beecause she live in Sendai that climate is very cold and often have snow. Rather than daifuku body I prefer called her snow princess or yuki onna. 12 years old Karen look very beautiful in her long her which means very mature woman despite her aged. From the audition we know how she look with no make-up or just little which looks very beaty in addition beauty white skin. This look very elegant especially when her perform on stage. How you to know Karen position when she perform with other member? the answer is very simple just looks who has the whitest skin and who has the most deflected light (from her physical only, the other just listen to her voice). This term can easy when you apply for the eample in "Manatsu no Sound Good" PV, in this you can look who white Karen skin (don`t fooled to Paruru who has same ponytail). For the height is average girl which you can compare to other she look tall (average AKB member is not to tall especialy when you compare to short girl like Takamina or Tano). For the face I think she is beautiful (relative for people). Actually Karen is clumsy girl who never think about her look, so if she can more concern to her look she can be more beautiful.
Now, she change image to short hair to give her freshness. This image is also can support to her because she like act more like boy which can we look from her cosplay, mandoku or danso (this one is great). Two side of her can attrack man and women. New sousenkyou poster can show how great her in danso. The new hair cut from her also give new image that is more cute and looks younger than before. I think her become more younger than the first look of her which is very mature (both of them i like). More feminim side will give her more advantage to her future.