Jennifer Aniston and Vince Vaughn at the French Open this year.

VINCE Vaughn says his apparent new girlfriend Jennifer Aniston, the ex-Friends actress, is genuine and "down-to-earth" with a great sense of humour.

Vaughn, who arrived separately from Aniston for the London premiere today of their new film, The Break-Up, signed autographs in Leicester Square and was quick to say what attracted him to Aniston, the ex-wife of actor Brad Pitt.

The filming of the romantic comedy is reported to have brought the pair together.
"She's the best," said Vaughn, 36. "Jennifer is the best. She's the one we had in mind for the film the whole time. She's really good at comedy and drama too."

Asked what he most liked about the star, he said: "What you see is what you get. She's very genuine, honest and down-to-earth and it's important to have that kind of likability in the film.''

When the actor was asked what it felt like to work and fall for Aniston, 37, he replied: "She's a great actress. She's got a great sense of humour."

When asked if the pair were an "item," he said he declined to talk about his personal life.

He said "smoking" made him look trim. "I quit for eight months but I'm back to a pack a day although I don't recommend it as a dietary means."

In the film, Aniston and Vaughn play lovers whose long-term relationship suddenly falls apart after a seemingly small argument.

The blonde actress, who made the movie as her own marriage to Brad Pitt came to an end, has said filming The Break-Up was a cathartic experience.

The personal love life of Vaughn, Aniston and her ex-husband, who has just become the father of a baby girl with Angelina Jolie, helped keep the movie in the public eye.