The lady is a vamp!

Lindsay Lohan bares her fangs and sleeps in a coffin in a new photoshoot for Tyler Shields with "The Vampire Diaries" star Michael Trevino -- and while he plays a werewolf in the show, he gets in on the bloodsucking action too.

Shields just posted photos from the shoot on his website, along with a message saying "Lindsay and I had been wanting to do this vampire shoot for a while and it came together in perfect time for my gallery, Trevino just happened to be in town it was all meant to be!"

Of Lohan's work ethic, Shields adds "What can I say Lindsay she takes it to another level the way she works is incredible she killed it and she killed Trevino who also I had only met twice before this but what an amazing guy I cant say enough about how great he was in this he left my house bruised and bleeding and loved every moment of it!"

Check out the pics above -- and some behind-the-scenes video below: