They duck home quickly to get changed. Elsa's actually wearing maternity dresses now – she's got a black one and a witches hat, just for fun. Anna has an old nurse's outfit, but she's actually a little embarrassed by it. It fits better than ever, but it's weird, now that she knows how old Elsa is. It feels... juvenile.
Anna wonders... is that how Elsa sees her? Younger, less mature? Even though it shouldn't, that thought makes her a little sad, and she throws the costume back into her cupboard.
"Aren't you dressing up?"