It's Alec!!

And FINALLY, after much speculation, scuttle-butting, rumur-spreading and hair tearing, Alec is...

Kevin Zegers! He is pretty cute. Cassandra Clare says,

I’ve always liked Kevin, since Transamerica, and I had him on my website for Sebastian for ages which is funny in retrospect because now I’ve seen him play Alec so I think he’s much too nice for Sebastian.
One of the things I really liked about Kevin was that one of Alec’s audition scenes was the scene where Alec shouts at Clary in City of Bones and tells her she endangered Jace’s life. And a lot of the actors who auditioned played it yelling and really mean so you just thought, boy, Alec. What a jerk that guy is. Kevin played it with a quiet sort of intensity that grew through the scene so you could see through the cracks of the anger and think: wow, this guy is really scared and vulnerable. Because that is the Alec people love.
Also he will not have to wear contacts to get Alec’s baby blues because he already has them. Which is just a fortunate plus.
So, if anyone's reading, leave a comment! What do you think about Alec's casting? And please, be polite :)