Kate Middleton Wears Jenny Packham and Jimmy Choo For Olympic Concert.

As an Olympic ambassador, we've already seen Kate Middleton playing hockey with the Team GB squad while kitted out in colour-popping jeans and this evening, the Duchess of Cambridge is continuing her patriotic duties at an extra special shindig. Yup, on this fine Friday, Prince William and Kate are walking the red carpet at the Royal Albert Hall as guests of honour for the 'Our Greatest Team Rises' event, which celebrates the British athletes hoping for glory at this summer's London games. The royal couple, who celebrated their first wedding anniversary last month, are joined by a bunch of famous faces including Mel C, Davina McCall and *squeal* Gary Barlow.

But what of Kate's ensemble? Well, err, WOW. Swathed in a floor-sweeping gown, she looks every inch the elegant princess. We've been reliably informed that the dress comes courtesy of Jenny Packham's Spring Summer 2012 collection and consists of a lace bodice that's embellished with Swarovski crystals and features an un-Middy-esque plunging neckline. Meanwhile, the skirt is pleated and is ribbon-waisted with a crystal and flower embellishment. We swoon. And would you look at that rich emerald colour! We're used to seeing the DoC in muted tones from charcoal greys to simple whites so such a bold hue is a right ol' treat.

Kate's topped off the gown with a matching clutch created especially for her by Jenny Packham, glistening drop earrings and the same silver Jimmy Choo Vamp heels she was sporting at Claridge's Hotel earlier this week. And her hair looks terrific, dontcha think, intricately plaited into a ladylike bun. With those delicate lace sleeves and the stunning buttoned-up back, this is one dress that demands an up 'do rather than those signature bouncy waves while the sweepy side-parting is the ideal finishing touch to such an elegant offering. Hmm, is someone trying to impress a certain Mr Barlow, we wonder?

One word for her is: Graceful.

Kate's brunette locks curled and coiffed to within an inch of their life by a team from the Richard Ward salon in Chelsea into an intricate knotted bun.

Happy couple: Kate stayed close to the Duke of Cambridge as she walked along the red carpet

The elegant royal couple exited their car to roars of approval from the eager crowd.

Spring style: The floaty dress featured a jewelled waist belt and netted shoulders

Catherine, Duchess of Cambridge, arrives in style at the "Our Greatest Team Rises" Olympic Concert held at Royal Albert Hall on Friday (May 11) in London, England.

Touching: Prince William puts a protective hand on his wife's slender back as they talk to some British Airways air hostesses.