You probably never suspected that Orlando Bloom's long blonde hair was real when he played Legolas in 'Lord of the Rings,' and it wasn't. He was wearing a wig. As anyone who's seen him in any of his other films already knows, Bloom's hair is neither straight nor blonde.
He has grown his real hair out once or twice in the past, though - perhaps most notably here in this 2005 picture, where he was preparing to film one of the 'Pirates of the Caribbean' movies.