I just thought she’d look good in this outfit. I know she usually has a more “rock” style, but she can pull-off the smart shirt and sweater.
While we’re at it, has anyone noticed that Sunset’s hair changed colour slightly? In the first two movies, it was a lot stronger red, now it’s a bit more laid back and not as bright. It’s a very subtle change; I only noticed it when I looked it up on the wiki.