Some sellers can and do use live models successfully. However, the model has to suit the era/look that they are going for, look like they are at ease and natural in the outfit (not strained or "roped into it") and their hair has to also suit. You have to at the very least not distract from the clothing, as you are selling clothing, not advertising work for the model.
When you click onto the site, you see an illustration of an elegant vintage lady - perhaps a hollywood starlet. It suggests glamor and that things are presented with an air of historical accuracy. And then there is the elegant lady with the hat. When you get inside, its a different story. The model exhibits are appealing to a modern person who likes to wear vintage things on occasion. But you still want to, if the prices are what they are, want to go that extra mile.
Your model appears to be very at ease wearing the skirts and they suit her.
However, when you get to the LBD her expression looks a little more strained, and her hair is just all wrong. I am not saying because she has wavy hair...it just distracts from the dress and you notice the hair instead of the outfit. I might suggest a french twist or at least pulled away in some way. It is not specific to any era - actually acceptable for all eras (french twist), and is classic (as the slogan is "classic clothign"). Also, I really find the dress hard to see the details on and am wondering if it isn't actually early 60s. But again, it is so hard to tell.
Also, as far as accessorization, the hat would make more sense if the hair is up.
As far as the 60s suit, the model looks very at ease and having fun. I might not retake the photo, but again, hair up would really set this outfit off. And if they are asking for these prices, you want every reason for someone to buy something.
Again, not to be harsh, but if these prices are being charged, then you have to be very high end in every way.