The exclusive State Banquet at Buckingham Palace was a lot bigger than expected. Though Queen Elizabeth II formally only invited President Donald Trump and First Lady Melania Trump, the Trump children, Donald Trump Jr., Tiffany Trump, Eric Trump and is wife Lara all joined the exclusive party. Ivanka Trump, the president's eldest daughter, was already set to attend the banquet as a formal adviser to the president and a senior member of his administration, while her husband, Jared Kushner, is also part of the U.S. delegation in attendance to the events. A spectacular State Banquet hosted by Her Majesty The Queen at Buckingham Palace ???? pic.twitter.com/kP0TVodzdv — Ivanka Trump (@IvankaTrump) June 3, 2019 In total, Trump was joined by his first lady, four of his five children and two of their spouses. In an interview with the British newspaper The Sun, Trump stated he wanted Ivanka, Donald Jr., Eric and Tiffany to meet Prince William and Prince Harry. "I think my children will be meeting them," he said. "It would be nice." SLIDESHOW: TOP DEMOCRATS RUNNING FOR PRESIDENT IN 2020 Though the Trump children were seen to be mingling at the State Banquet, there were no plans for a sit-down meeting. They eventually joined their father for his news conference with Prime Minister Theresa May and later toured the Churchill War Rooms. Visit to the Churchill War Rooms for a tour of the historic WWII war room bunker used by former Prime Minister Churchill and his cabinet. ????#USStateVisit pic.twitter.com/IdQSdvHzcM — Ivanka Trump (@IvankaTrump) June 4, 2019 Trump's business has always involved been a family affair – he became a New York real estate giant with the help of a loan from his father, Fred Trump; his then-wife Ivana Trump with him while they were married and Donald Jr., Ivanka and Eric all joined the Trump Organization when they became of age.