Who is the girl in tv commercial ads of Windows 8 computers ?

Hi,

I was wondering who is the girl in windows 8 new TV commercial, I see her that she has 2 big tooth and she is not like very beautiful but they have her in center of the ad.. what could be their thinking for choosing such face for such a international commercial ?

Here is the advert I am attaching if you are confused...

http://youtu.be/ZZ2cftjyHys

What a serious question .. lolz

Anyways, I don't know that girl but we have 3 girls in the ad, which one you are talking about ?