I refuse hold my breath on her remaining even remotely like that concept art. You even managed to make an Ionian general wear skimpy armor and have huge breasts. So I have no doubt you will add a neckline and pump it up before release. So whatever till then.
Also even if for some act of god she remains that way? One female champion out of them all like that means jip. You have yet to provide more female monsters and more female champions that focus on abilities, gameplay, story, and not big boobs. So big whoop.