Prince William made his wife, the Duchess of Cambridge, laugh when he started dancing during a Christmastime stop at a London charity project on Wednesday.
Kate, in a olive green Ralph Lauren jersey dress and her favorite black suede boots, looked relaxed as she stepped out beside a dressed-down William during a visit to Centrepoint.
The couple, both 29, joined in a culinary class and watched a performance by the winner of the center's talent show. Later, William joined resident Vanessa Boateng, 18, for an impromptu dance.
"You dust your shoulders off twice," Boateng instructed the Prince, who performed the routine while Kate watched and giggled next to him.
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For Kate, it was a first visit to the charity, and for William, it will have been an emotional return. He was introduced to it by his late mother Diana, Princess of Wales, who preceded him as royal patron. He took up the role of patron in 2005.
His strong ongoing commitment to Centrepoint was underscored when, in December 2009, he spent one night on the streets with the charity's chief executive, Seyi Obakin.
Later in the week, the couple will head to the royal family's country home of Sandringham House for the Christmas festivities.