WHO IS REALLY FAMOUS?

Famous Best Friends

Jennifer Garner and Jessica Biel

Our March cover girls became close when filming Valentine's Day.

"We don't work with a lot of women on our films," says Jennifer, explaining why the two connected during the film. "When I do work, it's always one woman and a bunch of men in my casts — maybe my character has a friend in the script, but not always. It's odd. So on this film, it was great to have someone like Jessica around..."

Drew Barrymore and Ellen Page

Despite their 12-year age difference, these two bonded immediately, even before they began filming Whip It. As Ellen said of first meeting Drew, "It was a surreal moment for me in my life. You could just feel her warmth and kindness immediately, and the way she carried herself was just so grounded. So then it was like, 'Oh, this is going to be great.'"

Dakota Fanning and Kristen Stewart

After sharing the screen in New Moon and starring in the upcoming film The Runaways, the two have been attached at the hip.

Jennifer Aniston and Courteney Cox-Arquette

Jennifer and Courteney formed a fast friendship back in 1994 on the set of Friends, and a decade and a half later they're still as close as ever.

Courteney has said that one of the reasons the friendship has lasted for such a long time is because they trust each other implicitly, "I guess the reason why I love Jennifer so much is that I feel very safe with her — always."

Kate Beckinsale and Victoria Beckham

The two are so close, Kate has been quoted saying, of her daughter Lily and Victoria's son, Brooklyn, "I am dreading the day Lily brings home a boy. But she and the Beckham boys get on really well. So if she did have to have a boyfriend, then I suppose Brooklyn would get my seal of approval."

Kate Hudson and Liv Tyler

Growing up the children of celebrities, the two manged to forge a strong friendship — one they've maintained as they created their own incredible careers and families.

Salma Hayek and Penélope Cruz

Perhaps it's their shared language — Penelope is from Spain and Salma's Mexican — or their shared occupation, but the two actresses have been close for years.

While filming Bandidas together, a plane almost crashed onto their set. "We almost died. At that very moment a thought came across my mind that if I were to die at that moment at least I'd die with my best friend," said Penélope.

Keira Knightley and Sienna Miller

While Filming The Edge of Love the two actresses became close and bonded over their shared "nerdiness." "We swap books. I went to Keira's house for dinner and we talked about books and swapped some. We play cards and do newspaper crosswords together," said Sienna.

Read more: Best Friends Who Are Celebrities - Famous Best Friends - Marie Claire

George Clooney and Brad Pitt

What's common between the two of them? They are incredibly hot, talented, witty, successful and also have a kind heart. The two of them share honest commitment to humanitarianism and philanthropy. Their off-screen chemistry was clearly visible on-screen in the Ocean's flicks. The two often spend nights playing poker together.

Ben Affleck and Matt Damon

Matt practically grew up with Ben. Since childhood the two have been really close. The two are not just best friends but are also distant cousins. Even today, they collaborate for a number of movies. In spite of being incredibly successful, they never let their success get into the lovely friendship they share. Ben recently stated that his friendship with Matt has not only grown stronger with the shared vacations, but they're also planning another film together.

Will Smith and Tom Cruise

These two stunning men have been friends for a very long time now. You'll often find them hanging out together and taking up for each other in front of the media. They have also confessed that they share a game of autograph signing competition and see who can spend more time with their fans on the Red Carpet events.

Lance Armstrong & Matthew McConaughey

The former professional cyclist, Lance Armstrong has been Matthew's best bud forever. From jogging and cycling together to attending the Red Carpet events and parties in each other's company, the duo are not afraid to celebrate their friendship openly. Their closeness also spread rumors about their sexuality. However, they soon cleared the rumors and confessed that they are just best friends.