The Trumps' historic, second state visit to the United Kingdom is underway! The day after touching town in London, President Donald Trump and First Lady Melania Trump reunited with the British royal family in Windsor. Prior to their trip, the 45th and 47th president of the United States remarked that it was "gonna be great and being with Charles and Camilla and everybody, I've gotten to know because of four years and now six months, gotten to know a lot of the family members."
He added, "They're great people. They're really great people. And in that sense, I think that the UK is very lucky."
Scroll to see the best photos from the first day of the Trumps' state visit to the UK:
Prince William and Catherine greeted President Donald Trump and First Lady Melania Trump on the grounds of Windsor Castle on Sept. 17.
The president complimented the Princess of Wales on her beauty, telling Her Royal Highness, “You’re beautiful, so beautiful."
Catherine certainly looked beautiful in a burgundy Emilia Wickstead coat dress, which she paired with a matching Jane Taylor hat.
The first lady wowed in a gray Dior Haute Couture skirt suit and a purple wide-brim hat.
Kate and Melania (pictured chatting with Queen Camilla) will undertake a joint engagement on Sept. 18. The Princess and First Lady are scheduled to visit Frogmore Gardens, where they will meet with Chief Scout Dwayne Fields and members of the Scouts’ Squirrels program.
Mrs. Trump also has an engagement with the Queen this trip. The two of them will tour Queen Mary’s Dolls’ House and the Royal Library at Windsor Castle on Sept. 18.
On Sept. 17, King Charles invited the President of the United States to inspect a Guard of Honour formed of three regiments of the Household Division: the Grenadier Guards, Coldstream Guards and Scots Guards.
President Trump said over the summer that he's "a big fan of King Charles."
The Prince and Princess of Wales viewed items from the Royal Collection in the Green Drawing Room at Windsor Castle with U.S. Secretary of State Marco Rubio.
In the afternoon, the American president and first lady visited St. George’s Chapel, where they laid a wreath on Queen Elizabeth's tomb. According to the Daily Mail's Rebecca English, the couple "spent ten minutes in reflection at Queen Elizabeth’s tomb" and after the president said, "This was a great honour."
The first lady and president also heard a musical performance from the chapel choir.
They later viewed a Beating Retreat ceremony on the east lawn of Windsor Castle.