A host of stylish names were out in force tonight to show that fashion is far from frivolous.

Some of the industry’s biggest movers and shakers attended an event for Runway to Win, an organisation set up to garner funds and attention in support of the re-election of President Barack Obama.

Actress Scarlett Johansson joined forces with US Vogue editor Anna Wintour to host the event, which took place at a Theory store in New York.

It’s in the genes: Scarlett Johansson and brother Hunter showed what a good-looking family they are

27-year-old Scarlett arrived on the arm of her twin brother Hunter, who works for Obama, and appeared alongside his sister in the movie Manny & Lo.

The hunk, who was seen escorting his sister to the White House Correspondents Dinner last year, looked dapper in a classic black suit.

Meanwhile Scarlett looked stunning in a black Stella McCartney frock that boasted a peplum skirt and sheer sleeves, with her blonde tresses styled elegantly into an updo.

Official business: The pair attended the Runway to Win event in support of President Barack Obama’s re-election

A common goal: Hunter works for the President, while Scarlett hosted the fundraiser in support of him

Hot hostess: Scarlett looked stunning in Stella McCartney as she spoke to the attendees

And she was beaming from ear to ear as she gave a speech to the event’s attendees about the importance of supporting their President, and the way in which the fundraising fashion can help to achieve that.

The initiative has seen the release of a range of Obama-themed T-shirts and accessories designed by some of fashion’s finest, with the proceeds gathered from sales of the products going to the Obama for America organisation.