There are plenty of images of her with "ornaments" not sure about clothing though.
Was she wearing a business suit? I bet she would look great in a Valentino.
No, this came from the ancient Phowa text of the Drikung Kagyu as explained by the visiting Khenpo from the Drikung Kagyu Institute. But yes, Vajrayogini would look good in many types of clothing. Anyway, it seems that images of a clothed Vajrayogini are quite rare.
When I think of "red silk clothes," I imagine something sort of Chinese-like like this:
I'm not sure what the Tibetan equivalent would be.