Thanks again everyone!
ThatsMrsGeek2U--The one change that I have noticed is that my smile looks more broad in general, and I like it (i.e. you can see more of my teeth when I smile). I used to have a really 'small' smile because of my narrow arches. Here are some pics to show the comparison:
Before Braces:
After 5 Months in Braces:
It's a little hard to tell from these pics, but it's something that I've noticed!
KK--I think it might just be the angle/cropping of the picture that makes my chin look different in the second picture, as I haven't really noticed that it looks very different. Perhaps it doesn't 'divot' in as much on the sides, but you can't really tell if you just look at me straight on.
tokidoki--Yes, I have top and bottom 'expanders' (I have been told by orthos on this site that they are not true expanders, they are just molar positioners, but they seem to be expanding my arches!). My ortho calls them lingual arches, but he does say that they are expanding things. The 'Controlled Arch' procedure that my ortho is using involves expanding the arches from the 'inside' (using expanders) and the 'outside' (using the braces/wires), so he can control how wide he wants my arches to become.