Yes, I'm referring to Isobel's receding hairline. Poor thing has inherited that from PD and although she still has more hair than he does, she is definitely thinning on top.
All that lovely (surprisingly) dark hair she was born with...
... is going and waiting to be replaced with the fair (and heaven help us, ginger hair) we are expecting.
I can't bring myself to trim her hair, even if in some lights she does resemble Barry from Eastenders.
(Pictures courtesy of PD's Photoblog)