What follows is an ordering of characters based on sexualization, from least to most sexualized. This is obviously a subjective arrangement, but the basic criteria I used is how much of their presentation is based around "looking sexy". I determined this by looking at body type, clothing, and pose - how much do these three things combine to make a character that "exudes sex"? How prominent are a character's breasts/hips/long legs/bare skin/etc.?

It should be noted that this arrangement isn't a reflection of my personal preferences; that is, the character at the far right (Sivir) isn't the one I personally find to be the sexiest. She is the one I feel to be most sexualized in presentation (judging SOLELY on the picture).