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Prince William, Kate Middleton, Prince George

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If you're a reporter hoping to interview the royal couple during their visit to the States next month, make sure to leave your tried and true denim at home.

That's right, folks—as uncovered by Politico, there is a dress code involved with getting to rub shoulders with Prince William and Kate Middleton.

"Journalists wishing to cover Royal engagements, whether in the United Kingdom or abroad, should comply with the dress code on formal occasions out of respect for the guests of The Queen, or any other member of the Royal Family," reads the announcement on the British Monarchy's official website.

The statement continues with a rundown of what's considered appropriate attire for a face-to-face with the royal couple: "Smart attire for men includes the wearing of a jacket and tie, and for women a trouser or skirt suit. Those wearing jeans or trainers will not be admitted and casually dressed members of the media will be turned away."

(For those who need a quick Brit-to-American translation, trainers are what we call sneakers.)

To be fair, it's not like we see Prince William and Kate attending official engagements in worn and torn denim. Will usually goes for suits and, for select sporty occasions, khakis, while Kate relies on style staples Jenny Packham, Alexander McQueen and Temperley London to deliver the ladylike but form-fitting frocks that have become her go-to event garb.

Even when Kate is hosting an event at her home, like this week's Place2Be Wellbeing in Schools Awards, she goes for chic and put-together—wearing skirts that fall to or just above the knee. While the duchess has been going for a sexier look lately—we're talking sheer-sleeves, not sheer all-over, guys—she still keeps it classic and, well, perfectly Kate.

The couple will be visiting the U.S. from Dec. 7 to Dec. 9 for an action-packed trip that includes seeing a basketball game at the Barclays Center, visiting the National September 11 Memorial and Museum and heading to the Metropolitan Museum of Art for the University of St Andrews' 600th anniversary dinner.

What do you think of the royals' dress code requirements?

PHOTOS: Every hat and fascinator that Kate Middleton has ever worn