Katie is Strawberry Shortcake, while Julie is Pinkie Pie from the My Little Pony Equestria Girls -- mercifully easier than a full Pony costume.
Conditions for trick-or-treating here were miserable, with a high around 40 degrees and 20 mph sustained winds combined with snow flurries. The girls made out like bandits as they went out with a couple of their friends and the friends' mother while I chickened out and stayed somewhere warm. :)
I think we had three or four groups hit our house, which may be a new low. Not surprising, given the weather.