Kate Middleton's Rebecca Taylor Jacket Sells Out In 30 Minutes (PHOTOS)

Judging by how fast Kate Middleton 's outfits usually sell out in stores, the next hot item for girls in England might be ... skirtsuits?

The Duke and Duchess of Cambridge (who celebrate their royal anniversary on Sunday!) greeted the crowd (and scores of photographers) at Goldsmiths' Hall in London on Thursday to honor the Scott-Amundsen Centenary Race to the South Pole, which raised funds for the British Legion (something Prince William knows a thing or two about).

Catherine suited up in a deep blue Rebecca Taylor skirtsuit. You could buy the tweed jacket at Neiman Marcus' website ... but just in the past 30 minutes, it's sold out. That darn Duchess Effect.

Kate's poppy brooch, the red flower symbol of the Royal British Legion charity, can be purchased online for $40. She also brought along her favorite blue Anya Hindmarch Marano clutch bag.

Yesterday William and Catherine , who were only recently reunited after William's deployment to the Falkland Islands, also stepped out together to the premiere of "African Cats," where Kate wore a gray Matthew Williamson dress.

While we love Kate's sold-out look, her suit reminds us of some other famous suit lovers: Hillary Clinton and Nancy Pelosi . Is Kate suiting up for her own career in politics?

Check out pics of Kate and Will doing their thang below.