Etiquette experts say he also made a faux pas by clinking his glass against the royal's, though she smiled throughout the festivities.
The first lady wore a Dolce & Gabbana dress with navy trim and a matching hat to visit Buckingham Palace.
The Queen is set to meet Donald Trump for a second time during his state visit to the UK next week. And while President Trump may be looking forward to his royal meeting, he won’t be staying at Buckingham Palace due to building works - nor will he be taken on a carriage procession, at the insistence of US security services. The Queen is set for one of her easiest state visits , according to royal biographer Robert Hardman - but it is certainly not her first meeting with a US President. Read more from Yahoo News UK: Trump says he might meet Boris and Farage during state visit More than 750k Europeans have applied to stay in UK after Brexit Unseen messages show how Nazis fell for D-Day plan In fact, Her Majesty has met with 12 Presidents, including Trump, during her time as Queen. One of those was in fact when she was still a mere princess - but came three months before she became Queen. Here is the roll call of all the Presidents the Queen has had the pleasure of getting to know over the years...
Queen Elizabeth was joined by her husband, Prince Philip, while stepping out for the Order of Merit service at Windsor Castle.
Astrologer Chris Love takes us through the astrology of the new royal baby, helping determine what we can expect from Prince Harry and Meghan's first born.
Michelle Obama is still answering for the time she supposedly breached royalprotocol by hugging Queen Elizabeth at Buckingham Palace in 2009
Queen Elizabeth II is known for her love of bright colours, and her latest look has us thinking of warmer temperatures. On Tuesday, the 92-year-old stepped out with the Duchess of Cambridge for an engagement at King’s College London. While we’re used to seeing both ladies out and about, this is the first time the two have attended an event together without another member of the royal family present. The royal matriarch looked glamorous in a three-quarter length pink cashmere coat with black buttons by her go-to designer Stewart Parvin. She paired the look with a matching hat with a lovely floral detail. With spring just around the corner, we suggest letting the Queen’s colourful outwear choice guide your sartorial choices for transitional dressing. Take a look through the gallery to shop the royal look without the royal price tag. The editors at Yahoo Lifestyle Canada are committed to finding you the best products at the best prices. At times, we may receive a share from purchases made via links on this page. Let us know what you think by commenting below and tweeting @ YahooStyleCA! Follow us on Twitter and Instagram . Check out Yahoo Canada’s podcast, Make It Reign — our hot takes on all things royals in a non-stuffy way — on Apple Podcasts and Google Podcasts .
Twitter users had a meltdown Wednesday night, thinking the royal family's social media account may have fallen into the hands of hackers, with one fan commenting, "Is this a joke?"