I completely get the message you are trying to convey. Sometimes when designers/actors/the media as a whole try to promote a brand, they tend to come up with a negative generalization of the people they are really appealing to. In order to reach a broad audience, I agree Kamali needs a more well-rounded approach.
I have seen some of her things featured in places affordable to many, such as Walmart and Ross, but of course there was never much of a selection.
There's a reason why designers, such as Kamali, sell to a higher-end clientele but at the same time if she is trying to send out a message to women from all over, then her designs need to actually be within reach for women from all over. Or change the models in her campaigns so it at least seems that way.