Tributes to Prince William and Kate Middleton on 10th wedding anniversary

The Duke and Duchess of Cambridge are celebrating 10th wedding anniversary. AP Photo

The Duke and Duchess of Cambridge are celebrating their 10th wedding anniversary.

To mark the occasion, the couple released two new smiling portraits, captured by photographer Chris Floyd.

A tribute to the couple has been posted by the British Royal Family.

"Wishing The Duke and Duchess of Cambridge a very happy wedding anniversary. Today marks 10 years since Their Royal Highnesses exchanged vows at Westminster Abbey," a caption on the Royal Family Instagram account reads.

Floyd also paid tribute by discussing the portraits he took of the couple on his Instagram. "I recently visited Cambridge for the first time in my life. That same day, by an astonishing coincidence, was also the day I was asked to photograph The Duke and Duchess of Cambridge for their 10th wedding anniversary.

"It was a thrill to spend some time with them at Kensington Palace, especially as The Duchess is a rather keen photographer. Happy anniversary!"

The couple married at London's Westminster Abbey on April 29, 2011, after meeting as students at the University of St Andrews in 2001.

See highlights from the Duke and Duchess of Cambridge's 2011 wedding here: 

In 2011, their wedding was watched by 17.6 million people in the UK and two billion worldwide.

During the event, Kate wore a custom gown by Alexander McQueen for the royal ceremony, which was conducted by the Archbishop of Canterbury.

The highly anticipated big day was attended by members of the royal family, including Queen Elizabeth II, with Prince Harry acting as best man.

The couple have since welcomed three children: Princes George and Louis, and Princess Charlotte.

To celebrate the couple's anniversary, the BBC will broadcast a special documentary. Royal Wedding: A Day to Remember, will be shown on Friday, a decade on from their wedding.