When it came to finding the perfect escort to dinner with the President, Scarlett Johansson knew just who to call - her twin brother.

The blonde actress was accompanied by strikingly similar looking Hunter to the White House Correspondent's Ball at the weekend.

And with their matching chiselled cheek bones and blonde hair, the family resemblance was obvious.

Perfect escort: Scarlett Johannson was accompanied by her twin brother Hunter at the White House Correspondents Association Dinner

The 25-year-olds - Scarlett is three minutes older - acted together as children in the 1996 film Manny & Lo.

But while she is now an A-list actress, Hunter works for Barack Obama - making him the perfect companion to the black tie dinner.

He left his job as a community organiser for Manhattan Borough President Scott Stringer in June 2008, to become the campaign organiser for Obama in Denver.

Scarlett later revealed in an interview that she emails Obama on a regular basis, after being introduced by her brother.

Pretty in pink: Scarlett's dress and satin shows highlighted her good looks

Scarlett is currently promoting her new film Iron Man 2, in which she stars alongside Gwyneth Paltrow.

Gwyneth rubbished claims the two had fallen out, after they refused to pose together on the red carpet at the LA premiere.

'I adore Scarlett. I loved having her on set,' she told People magazine.

Two of a kind: The family resemblance is obvious

'She is really funny. She swears a lot. She has a dirty sense of humour.

'She loves to cook. She's like a girl after my own heart.'

Scarlett's husband Ryan Reynolds was absent from Saturday night's star-studded event.

But among the 3,000 guests on hand were Jessica Simpson, Kim Kardashian, Chevy Chase, Alec Baldwin, Michelle Pfeiffer, Dennis Quaid, the Jonas brothers and Justin Bieber.

The annual event was originally a chance for the press who cover the White House to enjoy dinner with the President and Vice-President. The guest list has expanded over the years, becoming more 'Hollywood', with dozens of stars attending.

Crush: Fans tried to get Scarlett's autograph as she and Hunter headed home