"Robert Pattinson, who plays my adoptive brother in the Twilight films, has been one of my biggest inspirations," the Daily Telegraph quoted Greene as telling The Mail.
"As a person, he's not like anyone I've ever met in Hollywood, and as an actor he's a complete natural. He has no ego. Everyone loves him, but he's unaffected by that and never seems fazed by the attention that comes his way," said Greene.
"He's not changed a bit since I worked with him on the first Twilight movie. He's a great night out if you tag along with him to a pub or bar. He's not the nightclubbing, get-up-and-dance kind of guy, but during shooting we'll join him back at his hotel, where he'll get out his guitar and we'll have a loud sing along," she added.