Prince William and Kate Middleton have landed in the United States! The royal pair boarded a flight in Calgary earlier today, and landed at LAX around 4 p.m. today, where they were greeted with red, white, and blue bouquets and by LA's Mayor Antonio Villaraigosa. Kate looked lovely in a lavender dress by Roksanda Ilincic and neutral pumps. It's the pair's first visit to America since the royal wedding and Kate's first visit ever to the country! It will be a jam-packed weekend for the duo. Tonight, there will be a cocktail reception at the former British Consul-General's home where Prince William and Kate are staying during their visit, and tomorrow Will and Kate will head north to Santa Barbara. The sporty royals will be hosting a polo match at the Santa Barbara Polo and Racquet Club to raise funds for Prince William and Prince Harry's charitable foundation. William plans to play in the match, while Kate will present the winning team with their prize. After the athletic afternoon, they'll return to LA for a black-tie event, which is expected to draw celebs like Tom Hanks and Nicole Kidman. On Sunday, Will and Kate will turn their attention to philanthropy, visiting an inner-city arts program and a job fair for military families. We'll be following the royal couple's events all weekend long, so be sure to check back for all the latest news from their historic trip to the States!