Kanye nodded at his wife, his signal telling her to remove the coat. Of course she has her own autonomy within the marriage (well, one hopes she does) and could have refused or wanted to wear lingerie not be completely starkers on the world stage. But for Kanye to not just allow this stunt but actively participate he is showing he doesn't love his wife or care about her feelings. Her vacant look shows she isn't comfortable at all, she isn't enjoying this experience. Kanye is a malignant narcissist who has been surrounded by Yes men for too long and like many rappers his age somewhere crossed the line from power hungry to predator. As soon as this woman ages a little he will trade her in, he doesn't see women as people just objects to be used to enhance his fame/ego.