This isn't a new hair style for Catalina in this comic. This is what happens when Catalina doesn't take the time to properly style her hair and make it obvious to all that she is essentially a catgirl minus the cat ears and tail.
I believe I have mastered the art of drawing characters who invoke a need for people to hug them. This isn't a huge ego talking; it's the fact that, even while drawing this comic, I felt a near overwhelming urge to hug Catalina in a feeble attempt to make everything okay.
Speaking of which, panel five combined with Catalina's "cat-ness" keeps making me think of Lolcats. It makes me want to add the caption "Can I has a hug?", which would no doubt make [[2008-04-18|Raven slap me upside the head]].