givenchy and grimes

I don't listen Grimes but except this song. I suddenly found the fact that this song was used for the show of Givenchy(2013 ss) and it matched perfectly. so religious and spiritual. but I've never seen Grimes wearing Givenchy. oh grimes,why not? (but I'm sure she has such a good taste of fashion because she wears PICTUREPLANE's tshirt.)