Kate Middleton and Prince William's Best Photos in the USA, from LA to NYC

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Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Mission Serve: Hiring Our Heroes event on July 10, 2011 in Culver City, California. The newly married Royal Couple are on the final day of their first joint overseas tour to the USA. They arrived on Friday after spending 9 days in Canada. The couple started off their tour of North America by joining millions of Canadians in taking part in Canada Day celebrations which mark Canada's 144th Birthday. — Prince William and Kate Middleton in California. Arthur Edwards - Pool/Getty

Prince William and Kate Middleton are bringing the Earthshot Prize to Boston in December 2022, which will be their third trip to America as a couple.

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Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are arrive at LAX Airport on July 8, 2011 in Los Angeles, California. — Prince William and Kate Middleton. WireImage

Just a few months after their royal wedding, Kate and Prince William traveled to California after a tour of Canada. They arrived at LAX Airport on July 8, 2011.

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Prince William, Duke of Cambridge and Catherine, Duchess of Cambridg attends Variety's Venture Capital And New Media Summitat The Beverly Hilton hotel on July 8, 2011 in Beverly Hills, California. — Prince William and Kate Middleton. Steve Granitz/WireImage

The first stop was Variety's Venture Capital and New Media Summit at The Beverly Hills Hilton hotel. The conference explored how U.K. innovation was on course to rival that of Silicon Valley.

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Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge look on during a private reception at the British Consul-General's residence on July 8, 2011 in Los Angeles, California. The newly married Royal couple are on a three day visit to Southern California. — Kate Middleton and Prince William. Chris Pizzello - Pool/Getty

Kate and Prince William also attended a private reception at the British Consul-General's residence as part of their first day in California.

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The Duke And Duchess Attend A Charity Polo Match At The Santa Barbara Polo Club, California, In Aid Of American Friends Of The Foundation Of Prince William, And Prince Harry.The Duke Played In The Winning Team — Kate Middleton and Prince William. Julian Parker/UK Press via Getty

On July 9, the couple stepped out at the Santa Barbara Polo Club, where Prince William took part in a charity match.

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Prince William's team emerged victorious, and Kate proudly posed with the winners and their trophy.

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The Duke And Duchess Attend A Bafta Reception, At The Belasco Theatre In Los Angeles. — Prince William and Kate Middleton. Julian Parker/UK Press via Getty

From the polo field to the red carpet! That evening, the royal couple got all dressed up for a BAFTA Reception at the Belasco Theatre.

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The Duke And Duchess Of Cambridge Paint During A Visit To A Inner City Arts Youth Project, In Los Angeles, Usa. — Prince William and Kate Middleton. Julian Parker/UK Press via Getty

Kate and Prince William showed off their creative side during a July 10 visit to an inner city arts project for youth in Los Angeles.

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Catherine, Duchess of Cambridge meets actress Reese Witherspoon as she attends a reception to mark the Launch of Tusk Trust's US Patron's Circle on July 10, 2011 in Santa Barbara, California. The newly married Royal Couple are on the final day of their first joint overseas tour to the USA. They arrived on Friday after spending 9 days in Canada. The couple started off their tour of North America by joining millions of Canadians in taking part in Canada Day celebrations which mark Canada's 144th Birthday. — Kate Middleton and Reese Witherspoon. Chris Jackson - Pool/Getty

No trip to California is complete without a few celebrity encounters, right? Kate met Reese Witherspoon during a reception to mark the launch of Tusk Trust's U.S. Patron's Circle.

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Britain's Prince William and his wife Catherine, Duchess of Cambridge, help prepare care packages for military children as they attend the Mission Serve: Hiring Our Heroes event in Culver City, California July 10, 2011. Prince William and his wife Catherine are on a royal visit to California from July 8 to July 10. — Prince William and Kate Middleton. MARIO ANZUONI/AFP via Getty

The couple ended their California visit by helping to prepare care packages for military children at the the Mission Serve: Hiring Our Heroes event.

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Catherine, Duchess of Cambridge (R) and New York City Mayor Bill de Blasio's wife Chirlane McCray (L) greet guests at Northside Center for Child Development on December 8, 2014 in New York City. Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are on their official two-day visit to the United States. — Chirlane McCray and Kate Middleton. Neilson Barnard/Getty

Kate and Prince William returned to the U.S. in December 2014, this time for a winter visit to New York City. Kate teamed up with former Mayor Bill de Blasio's wife Chirlane McCray for a visit to the Northside Center for Child Development.

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Catherine, Duchess of Cambridge (R) meets former United States Secretary of State, Hillary Clinton as Prince William, Duke of Cambridge meets Chelsea Clinton during a conservation reception at British Consul General's Residence on December 8, 2014 in New York City. — Hillary Clinton, Prince William and Kate Middleton. Samir Hussein/WireImage

At a conservation reception at British Consul General's Residence, Kate and Prince William met Hillary Clinton as well as her daughter, Chelsea Clinton.

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Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. — Kate Middleton and Prince William. James Devaney/WireImage

On Dec. 8, the couple enjoyed popcorn at a Brooklyn Nets game, where they had courtside seats.

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Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge pose with basketball player LeBron James (R) backstage 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, Kate Middleton and LeBron James. Tim Rooke - Pool/Getty

Ahead of the game, the couple met with LeBron James — and were even gifted with a basketball jersey for their son, Prince George!

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Singer Beyonce and Husband Jay-Z greets The Duchess of Cambridge in the game of the Cleveland Cavaliers against the Brooklyn Nets at the Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. — Beyonce, Kate Middleton and JAY-Z. Nathaniel S. Butler/NBAE via Getty

Perhaps the highlight of the evening was when Kate and Prince William met JAY-Z and Beyoncé during the game.

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Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge are seen during their visit to the National September 11 Memorial Museum on December 9, 2014 in New York City. — Prince William and Kate Middleton. XPX/Star Max/GC Images

On Dec. 9, Prince William and Kate paid a visit to the National September 11 Memorial.

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Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit the National September 11 Memorial Museum on December 9, 2014 in New York City. — Prince William and Kate Middleton. Samir Hussein/Pool/WireImage

The couple also toured the September 11 Museum, remembering the lives lost during the terrorist attack.

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Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge watch a performance during their visit to The Door on December 9, 2014 in New York City. The Door provides services to disadvantaged young people. The royal couple, who are traveling without their son Prince George, are on a three-day US east coast visit. This is the Duke and Duchess' first official visit to New York City. — Kate Middleton and Prince William. Ian Vogler - Pool/Getty

At The Door, which provides services to disadvantaged young people, they watched a performance and joined in on an art class.

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Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave the St. Andrews 600th Anniversary Dinner at the Metropolitan Museum of Art on December 9, 2014 in New York City. The event is created to support scholarships and bursaries for students from under-privileged communities and investment in the university's media and science faculties, sports centers and lectureship in American literature. — Prince William and Kate Middleton during their 2014 visit to New York City. Paul Edwards - Pool/Getty

Kate and Prince William ended their New York City trip in style, with a dinner at the Metropolitan Museum of Art. The event was the 600th Anniversary Gala Benefit for the couple's alma mater, the University of St. Andrew's in Scotland.

Kate Middleton and Prince William in America! See Highlights from Their Past Visits