Why is she crying?

The other day she was screaming in the car the whole way from the store home.  She was fed and changed, so I had no idea what was wrong...until I went to get her and saw this...

I would be mad too if I puked all over myself.  I made the photo nice and big so you can see the detail.

Photos and more soon about all our adventures in Denver (if my sister Kate ever emails me some pics).