Some things change sprites and others do not currently. It depends on what exactly you mean. The demoness for example isn't going to change her sprite/model from growth directly but does change her appearance based on certain attribute investments.
you mean the succubus? Yeah i mean. If i go on strenght, does she changes sprite?
Not yet unfortunately. Arcane and Vitality are the only 2 that cause her to visually change at the moment.