President TrumpDonald John TrumpLawmakers release defense bill with parental leave-for-Space-Force deal House Democrats expected to unveil articles of impeachment Tuesday Houston police chief excoriates McConnell, Cornyn and Cruz on gun violence 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 TrumpMelania TrumpFirst lady lends a hand to 'Toys for Tots' charity drive The Hill's 12:30 Report — Presented by UANI — GOP, Democrats square off at final impeachment hearing The Hill's Morning Report - Sponsored by AdvaMed - A crucial week on impeachment 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.

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

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. 

Sen. Chris MurphyChristopher (Chris) Scott MurphyWhy the Democrats' impeachment drive is in trouble — and what Nancy Pelosi needs to do about it The Hill's Morning Report - Sponsored by AdvaMed - A crucial week on impeachment Senate braces for brawl on Trump impeachment rules 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.

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.”