The Duchess of Cambridge and Prince William put on their dancing shoes and got their rock on on Tuesday night in London.

The most famous newlyweds in the world attended a special charity concert along with William's father, Prince Charles, and his wife Camilla at the Royal Albert Hall. The concert featured a performance by Gary Barlow, the lead singer of British pop act Take That.

Kate, 29, sported a printed Zara dress and Ralph Lauren jacket to the show. Onlookers were not let down as she came in characteristic elegance and modesty. Kate and William were also joined by Camilla's daughters, Laura Lopes and Sara Parker Bowles.

As the pair strolled down the red carpet, Kate had a quiet giggle with William, also 29. The royal couple also chatted with Camilla, who was in an Anna Valentine dress; Parker Bowles looked quite well and at ease with the new duchess.

Once inside the venue for the annual show, the young couple took their place at the front of the royal box as the sold-out crowd loudly cheered for them; a clear sign that the young royals have steady and loyal fans.

The concert also benefits which both Charles' charity and of Prince William and Prince Harry's; the Prince's Trust as well as the Foundation (of which Kate is also now a huge patron).

Barlow, who is to perform at Buckingham Palace for the Queen's Diamond Jubilee next year, acknowledged and waved at the royals after singing the opening verses of Take That's newest hit, "The Greatest Day."

Before the concert he got some time to chat with the guests of honor. "I do hope you enjoy tonight and I hope it's not too loud for you," Barlow graciously said. To which William replied that he preferred it as loud as it could go.