The Duchess of Cambridge spoke of her relief at "getting out of the house" as she made her first public appearance in more than two months.
Pregnant Kate, who has been fighting a rare form of severe morning sickness, looked relaxed and cheerful as she joined the Duke of Cambridge in welcoming Singapore's president Tony Tan Keng Yam on a state visit.
The Duchess, whose second child is due in April, was dressed in a stylish bespoke Alexander McQueen grey checked fitted frock coat and matching coloured hat by Jane Taylor, but there was little sign of a baby bump.
She did not stay for a private lunch at Buckingham Palace, a possible indication that she is still not back to full health.
But the Cambridges had the privilege of escorting the president and his wife from their London hotel by car to the parade ground - Henry VIII's former jousting yard. When the two couples met in the president's suite, Mrs Tan said she was glad Kate could make the engagement and the Duchess replied: "So am I. I've been looking forward to getting out of the house, that's for sure."
The event was the first time Kate had been seen at an official public engagement since it was announced, six weeks ago, that she was expecting her second child, a sibling for Prince George.
The Duchess even managed to stand throughout the 20-minute ceremony on Horse Guards in the blustery conditions on the parade ground.