Prince William and Kate Middleton celebrity friends: Jay Z, Beyonce

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JENNIFER LOPEZ

BRITAIN MEETS THE BRONX — Mark Large/Reuters/Landov

Both J.Lo and Kate Middleton have worn dresses that will go down in history so they've got that in common. Perhaps that's what they talked about when the two, along with Prince William and Lopez's mom Guadalupe, hung out at the BAFTA Brits to Watch awards in Los Angeles on July 9, 2011.

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REESE WITHERSPOON

"I don't know, maybe we can be friends," the actress told Ellen DeGeneres of her (hopeful) relationship with the Duchess after an evening spent with the royals in Los Angeles on July 10, 2011 at producer Steve Tisch's mixer. If this friendship blossoms, we've got their combined name all picked out: ReeKat.

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LEBRON JAMES

A prince and princess meet King James. It sounds like a children's book, but it's actually what happened after Will and Kate watched the Cleveland Cavaliers beat the Brooklyn Nets in N.Y.C. on Dec. 8. The baller presented her with a "Cambridge" jersey (we imagine she'll belt it and wear it with Stuart Weitzman espadrille wedges this summer), plus one for George.

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JAY Z & BEYONCE

It's the stuff dreams are made of. We were so excited by the encounter in Brooklyn on Dec. 8 that we just had to imagine their conversations. All that's left to do is hope George and Blue Ivy have a playdate soon.

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SIR PATRICK STEWART

It's not his first rodeo. The X-Men and Star Trek star was knighted by the Queen in 2010, but this time it's the Duchess he gets to meet – and he brings his wife Sunny Ozell for the Dec. 9 event in New York City.

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JENNA LYONS

Our fingers are still crossed that this Dec. 9 meeting in N.Y.C. results in Kate doing a capsule collection for J.Crew. What, it could happen.

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HILARY & CHELSEA CLINTON

Just two new moms from powerful families, hanging out. Chelsea, her husband Marc Mezvisnky and her mom mingled with the Brits at the Clinton Foundation's reception at the British Consulate General's Residence in N.Y.C. honoring the prince's work on Dec. 8.

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EMMA WATSON & KATE MOSS

Perhaps he told the Harry Potter star all about his visit to the set of her films? Whatever the conversation, Moss is entertained at a dinner to celebrate the work of The Royal Marsden cancer hospital on May 13 in Windsor, England.

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RALPH LAUREN

The iconic fashion designer looked more than pleased to meet the Prince at the Royal Marsden charity dinner – but Wills knew better: "I'm sorry my wife's not here. You probably would far rather [see] my wife."

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JACKIE CHAN

The action star sticks with a simple handshake rather than a martial arts move when he greets Will on Feb. 12 at the National History Museum in London. Smart call.

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TAYLOR SWIFT

In royal hierarchy, who's more powerful – a pop princess or a prince? We'll check with the Queen and get back to you. But what we do know is T.Swizzle called Will "really funny" and "so cool" at the Centrepoint charity gala at Kensington Palace on Nov. 26, 2013.

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DAVID BECKHAM

The longtime pals (the former soccer star and his wife Victoria were guests at the royal wedding) look right at home cheering on their team at the London Olympics on July 29, 2012.

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