The line between sexy and over-sexualized in comics is a hard one to pin down. It’s different for everyone, of course, but for the purposes of this post, we should probably agree on a few ground rules, just for the sake of having one conversation, rather than many. Art in a comic is over-sexualized when the women are drawn as sex objects first and heroes (or people) second. Skimpy clothes, large breasts, arched backs, and exploitative camera angles all contribute to heroines being drawn as sex objects. For a good example, check out this image by Ed Benes, which was part of the promo push for Blackest Night:

There are five fully-dressed men on the page, but the two women have as much skin on display as possible, no matter how unlikely it would be. Star Sapphire, the one in the foreground, is a particularly terrible example of the depths superhero art can sink to, as there’s nothing reasonable about her costume, from her high collar to her cleverly-placed superhero emblem. Her breasts and butt are emphasized to the detriment of the story this image is trying to tell. The image is, at least theoretically, about a vicious war between several different factions. In practice, it’s about fully-clothed, over-muscled dudes growling at each other while a lady vamps with barely any clothes on nearby.
Read More: http://www.comicsalliance.com/2012/02/16/superheroine-sex-art-story/#ixzz1mgcLoQQk