One online community bulletin board wrote a post titled "IU humiliated by Won Bin's head size?" The post included a picture that showed IU and Won Bin with a fan in the middle at the "SK Telecom 4G LTE Commercial Proclamation", which took place very recently. IU showed off her feminine beauty with a white blouse and a colorful skirt. Won Bin looked sharp in his black suit and tanned skin. What really caught people's attention though was Won Bin's head size compared to IU's. Won Bin is known for having the smallest head compared to any other guy and it seems like he has one that's even smaller than a teenage girl's. Even though IU obviously has a small head, next to Won Bin, her head surprisingly looks a tiny bit bigger. Won Bin's face/head is definitely one that many people are envious of. Source: Money Today via Nate