Sienna Finally Changed Her Clothes!

I bet that jacket she wore three days in a row was starting to get stinky, because the homewrecking hottie finally changed into something different yesterday afternoon. And is that the beginning of a smile on her pretty face? Awww, maybe the wicked grinch of the east is finally starting to get into the holiday spirit! We caught Sienna Miller walking her dog in NYC this morning, and we're happy to see that the blonde beauty has adjusted her attitude AND her wardrobe. Would it be too much to ask for her to keep her paws off of the married men?