Molly most certainly would try to pick out something ridiculously immodest. Not in any seriousness, probably, but to see how far she could push. Kara was an unknown in that way.
"Something like that's nice," she nodded toward the dress. "But not black. Black doesn't seem like you. You should wear like...yellow or red I think." Something bright and sunshiney. That seemed more like Kara. And Molly thought Bucky would look not stupid in a red tie.