First, don't get fooled. This is a poster from the City of Fallen Angel book trailer, the so mentioned #CoFAshoot in twitter. Of course we would love to see this as official for the movies, but it's not (yet! :D)
Explanations apart, this is an awesome art @cassieclare posted in her twitter yesterday. We're very happy Cassandra and Vania love so much sharing Carson/Alec photos!! That's for our daily fix :)