Cleveland Cavaliers vs. Brooklyn Nets at the Barclays Center - Prince William and Dutchess of Cambridge Kate Middleton meet Jay-Z and Beyonce in between the 3rd and 4th quarter.

Cleveland Cavaliers vs. Brooklyn Nets at the Barclays Center – Prince William and Dutchess of Cambridge Kate Middleton meet Jay-Z and Beyonce in between the 3rd and 4th quarter.

*British royalty, music royalty and NBA royalty were all under one roof in Brooklyn Monday night.

During their three-day U.S. tour, Prince William and Kate, Duchess of Cambridge, attended the Brooklyn Nets – Cleveland Cavaliers game at Barclays Center and got to meet Cavs star LeBron “King James” James, as well as Beyonce and Jay Z.

William and Kate, both 32, took seats courtside a few minutes into the game’s third quarter, getting a standing ovation from the 17,732 fans in attendance. After that quarter, Beyonce and Jay Z walked from where they were sitting on the opposite side of the court to greet the duke and duchess.

12/8/14 - Cleveland Cavaliers vs. Brooklyn Nets at the Barclays Center - Prince William and Dutchess of Cambridge Kate Middleton meet Jay-Z and Beyonce in between the 3rd and 4th quarter.

12/8/14 – Cleveland Cavaliers vs. Brooklyn Nets at the Barclays Center – Prince William and Dutchess of Cambridge Kate Middleton meet Jay-Z and Beyonce in between the 3rd and 4th quarter.

The royals attended the game to celebrate the partnership between the NBA and the Royal Foundation’s United for Wildlife to help fight illegal wildlife trafficking. They were seated next to former player Dikembe Mutombo, who is an ambassador for United for Wildlife.

“At last I’m standing next to someone who is taller than me,” William joked to Mutombo during a pre-game photo call.

Prince William, Duke of Cambridge (C) and Catherine, Duchess of Cambridge (2nd L) pose with NBA Commissioner Adam Silver (2nd R), Global Ambassador Dikembe Mutombo (L) and Sr. Vice President, Community & Player Programs Kathleen Behrens (R) as they attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City.

Prince William, Duke of Cambridge (C) and Catherine, Duchess of Cambridge (2nd L) pose with NBA Commissioner Adam Silver (2nd R), Global Ambassador Dikembe Mutombo (L) and Sr. Vice President, Community & Player Programs Kathleen Behrens (R) as they attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City.

William and Kate (wearing a gray coat by American designer Tory Burch) then met James after the game, and the basketball star presented the royals with a pint-sized jersey for Prince George. He also gifted the couple with cupcakes from his hometown of Akron, Ohio, the Daily Mail reports.

James later shared photos of the meeting with his Instagram followers:

“I gave them a present and thanked them for coming here to America to watch our game,” the 10-time All-Star told ESPN after the game. “For them to take time out of their schedules and to come out here to watch their first basketball game, it was an honor to be that guy they wanted to watch. So it was pretty cool.” Watch video of the meeting below:

The royal couple’s night out came at the end of a whirlwind day of events that began with William meeting President Obama and giving a speech in Washington, while Kate visited a child development center with New York City’s first lady in Harlem. The kids apparently thought they were meeting a princess from the Disney movie “Frozen.” [Video at :33 below]

They also attended a reception at the British Consul General’s residence co-hosted by the Royal Foundation and the Clinton Foundation, celebrating conservation efforts, where they spent some time talking with former Secretary of State Hillary Rodham Clinton, Chelsea Clinton and her husband, Marc Mezvinsky.

Tuesday, the final day of their trip, has an equally packed agenda that includes a stop at the National Sept. 11 Memorial and Museum and a gala at the Metropolitan Museum of Art.