Ignoring that Ms. Marvel’s boobs have apparently grown as they’ve been fighting, look carefully at Ms. Marvel’s left side… it looks like the artist had her arm up originally, then forgot to erase it when she decided that Ms. Marvel should be catching Moonstone’s punch.
I found a good analysis picture from here:
That or Ms. Marvel grew a third arm as well as extra boobage.
Edit: if you can’t see the bottom picture, click on the grey photo icon and you should be able to. :)