^ exactly she doesn't need one. However, her agent Pedja post a picture of showcards from her, Natasha and Jourdan hanging in the street. You can see it on instagram. And her picture was on the cover of the showcard book from Women.
But she doesn't need to go to castings.
About Givenchy. She hasn't walked in a while but she used to be a favourite and did lookbooks for him and all, so I guess she had a fair chance of walking, considering old faves as Magdalena, Karmen and Iris walked as well. If she flies to NY now she can still walk for Ralph and Michael and all the other usuals. We'll see. Cavalli and Balmain are probably a shoo-in.