'Jill from Philly' meets the Queen

Almost five months into her new job, Jill Biden is still revealing what kind of first lady she wants to be, but one thing is already clear: you can call her "Jill."

Biden has insisted at just about every turn that people address her by her first name. She means it -- people actually call her that or, sometimes, "Dr. B." The familiar approachability is part of the Biden narrative, and an aspect of her personality into which she leans hard. This week, however, Biden steps into a global spotlight, complete with the expectations that come with being the spouse of the leader of the free world, and one that includes an audience with the Queen of England. Yet Biden has not had withering bouts of nervousness, nor has she scrutinized the choreography of royal protocol, two people familiar with the first lady's thinking in the run-up to the trip tell CNN.