Plus, it's not like she suddenly dropped a bunch of weight and became skeletal. She's *always* been very tall and very slim and it looks to be her natural build, not something brought on by anything outside of that.
It's so funny to see how she walks when she doesn't realize she's being photographed or she isn't on stage. I don't know if the pigeon toed thing is supposed to be cute or what, but it is such an odd thing to fake.
I don't think she's "scary" skinny. She does look a bit skinnier than she did over the summer, however, she's been doing a lot of promotion and getting ready for her tour, etc. She basically had a vacation over the summer. I noticed that her face looks more gaunt, but I wouldn't call it scary.
^ This was just from the AMAs. That's kind of scary seeing her spine pop out of her back when she's not bending over.