Draco Malfoy, aka my absolute favourite character in Harry Potter. I've been cosplaying him for 3 years now and I've been told I'm a look-a-like for him. Scary thought, eh?
This picture here is one we took at Lumos '06. I made the entire costume, save for the bag and the book of Monsters, and yes, my hair is naturally that blond. I even cut it for this costume, so that it was exactly like him.