Stella McCartney welcomes 'unique' challenge of 2012 designs

Stella McCartney says it's a "once-in-a-lifetime opportunity" to design the Adidas competition wear for the 2012 Olympic Games.

The fashion designer - who was announced last year as the creator of the sportswear firm's kit for both the British Olympic and Paralympic teams to wear at the London event - has already started work on the kits and admits it's a very exciting, but lengthy, project.