SHOCK : a DOUBLE of mine!

This shocked me a lot!
Today my class and I moved to our school's Chemistry Laboratory (I've never known that we have one!!! It's so cool! There are also some whole skeletons haha). Well, after contemplating some cool experiments about the atom and its electrons, the teacher put up a video...in that moment a girl enters in the lab...
OMG she was really a DOUBLE of mine!!! As soon as I saw her, I retreated my head and I blinked about 3-4 times!!! I thought that it was only my impression...but I realized that the whole class started to whisper and look at me!!...Until a friend of mine said : "Look, Ginevra...there is your photocopy!!!" Then an other guy told me the same thing!!!
O_____________O
It's very strange! When I look at my sister (who is like me a LITTLE...for me haha) or an other guy, actress (that resemble me for other people) I can't see any resemblance! But this time is so different...
But at the same time she unlikes me!!! She has black hair, bigger eyes, thiner face and body...It's very strange!
Well, I know that every person has at least 7 doubles around the world... but it was so unexpected! haha
But now I remember that when I was child I read always "Disney : Cip and Dale' magazine" , where there were some pages in which you could send your photo and a short letter...well, that was the first time I found a double of mine!
Now I miss other five ones...hahaha