People come in all shapes and sizes. Short and tall, young and old, and sometimes with wings or a tail. Just because she's a monster girl, it doesn't mean she can't show you some love.
Hey anyone out there remember this cutie? Well guess what, now any of you out there have the chance to own her as a gorgeous and charming figurine! Myself, the peerless Kieran Mckay and the fine folks at Level 52 studio have a kickstarter going for her now, and if things are successful there are already plans for other adorable monster girl statues in the works. Check it out and buy one, or three! I have decided to hop in on this Bowsette hype train. Well, this guy got to be in existance for exactly 10 minutes before I had a violent urge to draw him naked and basking with my mermaid, Nyniv. Oh, my!
Any "exotic" being alien, monster, robot, demon, ghost , etc. When the Male Gaze gets involved this results in common design features for female characters in other contexts, like Hartman Hips , Non-Mammal Mammaries , long hair , and Tertiary Sexual Characteristics like dresses or make-up or bits of anatomy designed to look like a dress or make-up , even if it would make no sense for such a creature to have these features. Conversely it can be done for Grotesque Cute reasons, contrasting the monstrous and cute side, especially if they still act like the monster they're based on — villainous CMGs in particular are very likely to be Literal Man Eaters. Female One Gender Races are typically these.
To put it simply, were Rule 34 and a Dungeons and Dragons Monster Manual to have hardcore ball-busting sex , monstergirls would be the product of their sweaty lust, and both parents would look upon their children with pride. In essence: Take a monster and add bits of female human anatomy until you have something left that's fairly sexy. Then, for good measure, add a bit of behavioral changes similar to the creature before. The most common form of this, especially from Weeaboo artists, is basically a human girl with tails, ears, inhuman limbs, spikes, tentacles , or whatever; they often ending up looking like cosplay creations if not handled well.