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Prince William and Kate Middleton sat courtside at the Brooklyn Nets vs. Cleveland Cavaliers game last night, and in between the third and fourth quarter, the royals met up with Beyonce and Jay Z -- how exciting!

Beyonce and Jay walked across the court to greet the royals while "God Save the Queen" played, and the footage of their introduction was played on the jumbotron. Will and Kate also got a standing ovation at the game -- Americans just looooove the royals!

After that Will and Kate met up with LeBron James, who gifted them with a tiny jersey for their son George. LeBron posted a few snapshots on his Instagram and wrote, "This very moment will be forever remembered and put up in my house. It's all good and all smiles on this side ... Wow what an Honor! This game has brought me so much and I'll never take it for granted! The King, "Duke & Duchess. #Royalty #StriveForGreatness #RWTW #LRMR #Klutch."

But did LeBron realize that you're not supposed to get cozy with members of the royal family when posing for photos? The NBA star seemingly forgot when he wrapped his arm around Duchess Kate, but she laughed it off afterwards. It's probably not the first time that's happened!