Yes, Mia is a yorkie Chihuahua mix...but she looks a little different now. She was younger in that picture. She is still cute, don't get me wrong, but not quite as "to die for" as she was as a puppy imo. I have seen more recent photos because I was also obsessed. I don't know what the chance would be of getting that again.
Here is one of my favorites!!
http://www.dogster.com/pet_page.php?i=225938