President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE was mocked on Twitter for his apparently ill-fitting formal wear during a state banquet hosted by Queen Elizabeth II at Buckingham Palace.

Trump attended the lavish feast with first lady Melania Trump Melania TrumpTrump privately blamed Black Americans for lacking initiative: report The Hill's 12:30 Report: Ginsburg lies in repose Melania Trump: Ginsburg's 'spirit will live on in all she has inspired' MORE, who was wearing a Dior Haute Couture gown, but Twitter users quickly jumped on the president over his tuxedo tails.

Actress Bette Midler, a frequent Trump critic, detailed what she called a “proportion fail."

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“His white waistcoat is at least two inches too long; tailcoat is supposed to be almost the same length as the waistcoat beneath, sleeves should be shorter and show a bit of the cuff below, waist itself is nipped in...what a figure he cuts! Fire the tailor!!” Midler wrote on Twitter.

PROPORTION FAIL!! His white waistcoat is at least two inches too long; tailcoat is supposed to be almost the same length as the waistcoat beneath, sleeves should be shorter and show a bit of the cuff below, waist itself is nipped in...what a figure he cuts! Fire the tailor!! https://t.co/6eeLMAOaF1 — Bette Midler (@BetteMidler) June 4, 2019

MSNBC host Joy Reid asked royal experts on Twitter to weigh in on the length of Trump's vest tails.

Question for royals/formals experts: are Trump's vest tails supposed to hang down like that? https://t.co/D39sppBKDk — Joy Reid (@JoyAnnReid) June 3, 2019

Others compared Trump's attire to a similar outfit worn by former President Obama at a state banquet in May 2011, and joked about the fit of Trump's tails.

Trump’s problem here was poor tailoring. His waistcoat sits much lower under his tailcoat then Obama’s, which also has the effect of accentuating a gut (which men’s dress clothing is typically optimized to minimize). https://t.co/rNd3yqj98f — Nick Confessore (@nickconfessore) June 4, 2019

Trump's tux is unfitted, It reminded me of: pic.twitter.com/AGloh5GOCx — Just Ricky (@GADeafRicky) June 4, 2019

Trump dressed as if he's a Downton Abbey extra you're never supposed to see in focus because the Wardrobe department knocked up his outfit in five minutes from some old tablecloths and a black sheet they found draped over a sofa pic.twitter.com/bmcWVGa5Sf — Rupert Myers (@RupertMyers) June 3, 2019

whoever tailored Trump's abominable outfit is with la résistance pic.twitter.com/YG4gxvzFXT — Jennine Khalik (@jennineak) June 4, 2019

Sen. Chris Murphy Christopher (Chris) Scott MurphyDemocratic senator calls for 'more flexible' medical supply chain to counter pandemics The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon GOP chairman to release interim report on Biden probe 'in about a week' MORE (D-Conn.) even weighed in, saying he was more concerned with Trump’s behavior during the three-day state visit.

“What I care about is how monumentally stupid it is for Trump to be cheerleading Brexit. There is no way to confront an expansionist Russia and a rising China without the United States and a strong, united Europe working together,” Murphy wrote on Twitter.

I don't care what Trump looks like in tails.



What I care about is how monumentally stupid it is for Trump to be cheerleading Brexit. There is no way to confront an expansionist Russia and a rising China without the United States and a strong, united Europe working together. — Chris Murphy (@ChrisMurphyCT) June 4, 2019

Trump on Sunday said that he would support the United Kingdom leaving the European Union without a Brexit deal if U.K. officials can't reach an agreement with EU leaders.

"If they don’t get what they want, I would walk away,” Trump told Britain's Sunday Times just before the state banquet. “Yes, I would walk away. If you don’t get the deal you want, if you don’t get a fair deal, then you walk away.”