This is the one thing Meghan Markle and Kate Middleton always do before making public appearances 

This is the one thing Meghan Markle and Kate Middleton always do before making public appearances 

While Kate Middleton and Meghan Markle are far from ordinary beings - having been plucked from their moderate-in-comparison-beginnings by two of Britain's most eligible bachelors - the pair still have to contend with the same sartorial mishaps that we face on the regular. There are untucked hems, missing buttons, the dreaded nip-slip, and then, of course, you could always be surprised by a gust of wind, which causes your skirt to blow up in your face, by and by flashing the one pair of knickers you really didn't want on display.

As it turns out, the Duchesses of both Cambridge and Sussex aren't immune to this age-old problem, and together (yes, they are 100 per cent best friends now) they have come up with a fool-proof way to ensure that no one knows they are wearing Tuesday's pants when it is, in fact, Friday. Gosh darn laundry day, eh?

meghan markle kate middleton Credit: Getty

Given that Kate Middleton has been a member of the royal family for upwards of seven years now, she's undoubtedly been passing on some tips and tricks to the newly appointed Duchess of Sussex in order to ensure that she doesn't make any of the same awkward fashion mishaps when out in public.

Just last week, Meghan attracted considerable press attention for accidentally flashing her bra (shock, horror - do some people not know that it's 2018?), so it came as little surprise that the erstwhile Suits actress is taking all necessary steps to ensure that the paparazzi don't have reason to catch her "off-guard" again.

Speaking to The Sun, Myka Meier, founder of Beaumont Etiquette, revealed that there is one way that the sister-in-laws are protecting themselves - and you may even have it in your wardrobe already: Spanx.

"Often they wear body suits and clothes that actually increase static so it’s much harder for something to fly up. So you have an under garment that is almost like a body suit that is one tactic that is used," Myka said.

Given that Meghan's due to fly off to Australia in October, she'll certainly be looking for ways to avoid a wardrobe malfunction like the one that Kate had on the runway in Canada in 2011.

Kate Middleton Credit: Getty

Luckily, Myka had a hack to avoid something similar happening on the tarmac for Meghan. "I know when I went to finishing school we were taught that when you are on the tarmac, if you do not use weights or heavy weighted material, you make sure it will not fly up by wearing under garments that keep the fabrics connect to your body."

She also suggested that the royals should put on a hat before leaving the plane, to ensure that any wayward hairs are kept in place.

Well, being a royal doesn't seem to be an easy feat, does it? Luckily, it comes with a number of perks: duchesses are privy to a pretty amazing wardrobe, and on top of that, they aren't expected to pay for the clothes that they wear to official royal engagements.

According to The Telegraph, Prince Charles picks up the tab for the clothes that Prince William, Kate Middleton, Prince Harry, and now, Meghan Markle, wear to royal events.

How dreamy, right?