Aniston still tight-lipped about romance

Vince Vaughn (left) and Jennifer Aniston.

Jennifer Aniston may have been accidentally introduced as Jennifer Vaughn at a press conference in Sydney this week, but she played her rumoured romance with Vince Vaughn close to her chest.

Asked if she was in a relationship with Vaughn, Aniston neither confirmed nor denied.

"That is my personal choice just to not talk about my relationships. Only because you are damned if you do and damned if you don't. Quite honestly, I think I would just prefer not to."

Vaughn gave glowing comments about the star.

"She is so easy to be around ... the thing with Jennifer is that what you see is what you get. She is the genuine article, she is kind, she is very aware, considerate of people and a very warm person."