What Liz wore
This costume comes from the epitome of old Hollywood epic movies. I loved those movies, and I nearly fainted when I saw this costume on the big screen.
What Isis wore
Naturally, the greatest goddess in the Egyptian pantheon could come nowhere near the fabulousness of Liz Taylor, but she did her best. The first picture is of Isis in one of the depictions of her with wings (not easily seen in Liz's costume, but definitely there). In the second one, Isis is on the throne, and the goddess Ma'at (also winged) kneels before her. (Yeah, the ancient Egyptians did some mash-ups of their own.) There you see the vulture crown and scale-like texture of the dress.
Old Hollywood, what a trip!
Now you know why young Michalea threw a hissy fit to see this movie.