“You made Clara the hero.”
“That’s because she is the hero.”
You can see that the hat is actually Clare’s and she’s actually also wearing the same jacket and scarf. Imogen’s hat doesn’t have a pattern on it - it’s completely red.
See Imogen’s hat here: http://30.media.tumblr.com/tumblr_lxo92aqmn31qgpv1do1_500.jpg