We Finally Know Why Kim Kardashian Was in Met Gala Fittings Until Midnight

"It’s about the exchange of ideas," Olivier told us, referring to the fitting process. "Obviously, when you’re a designer, you want to make sure the dress is going to be perfect. After you put it on Kim and after you know the fit is great and the look is great, you know she’s going to be like, “Oh, why can’t we do that?” or “Why can't we change that?” And I’m the first one to say yeah, let’s do that! Because I want to make sure she’s happy. I am happy when she’s happy.”