That glittery, champagne-colored J Crew cardigan US first lady Michelle Obama wore during a visit at No 10 Downing Street in London quickly sold out after photos of it flashed around the world yesterday.

Whether it was a meeting with the British prime minister and his wife or a reception with the queen at Buckingham Palace, all eyes were on the woman whom one British paper dubbed "Mighty Michelle" as she accompanied her husband to this week's G-20 summit of world leaders.