What royal protocol? Meghan Markle & Kate Middleton's most daring looks

If there’s ever a time to bare a shoulder, it's on the red carpet, and the Duchess of Cambridge knows it. She looked glamorous at the 2019 British Academy Film Awards at Royal Albert Hall, in a gorgeous white Alexander McQueen look that made her look like a movie star.

Meghan Markle, the Duchess of Sussex, was divine on stage during The 2018 Fashion Awards in London. Then pregnant with baby Archie, she wore this beautiful custom-made Givenchy gown that allowed her to show more skin than usual.

Kate Middleton dared to wear a more-plunging neckline and show off her toned back in a fantastic turquoise Jenny Packham dress, which ensured she looked great both coming and going!

A halter dress is one of the most flattering looks there is, and Meghan rocked it out in an olive green Antonio Berardi look at the Invictus Games Closing Ceremony of 2018 in Australia. The dress had an open back which was a surprisingly sexy choice for the Duchess of Sussex.

The Duchess of Cambridge wore one of her most surprising to the Victoria & Albert Museum in London back in 2017. The royal stepped out in a tweed black and white minidress by Gucci that had red details to match her purse.

The Duchess of Sussex stunned in a black tuxedo minidress by Judith & Charles, showing off her toned legs in the sexy outfit. The Los Angeles native looked ready for her close-up on her night out with Prince Harry to check out Hamilton.

While the fabric is traditional, Kate took the rebellious route when she chose this gorgeous tweed tuxedo dress by Canadian designer Erdem which featured a low off-the-shoulder neckline.

Meghan and Kate are making this a royal trend! Meghan also showed off her collarbone in off-the-shoulder tweed, this time by Theory, for an official visit to Cardiff Castle. We can tell husband Prince Harry loves the look!

Kate seems to have taken a page from Angelina Jolie's book with this gown by Self Portrait. The high neck and long sleeves are more conservative, but the thigh-high split shows off a peek of leg.

Formal royal trips abroad are never vacations, even when the destination is a picturesque place like Fraser Island, Australia. The Duchess of Sussex wore the casual Pineapple dress by Reformation ($218), a striped linen look with a high thigh split.

Meghan Markle is an expert at balancing her personal style with the demands of her royal role. The blush pink dress Carolina Herrera dress with an off-the-shoulder neckline that she wore to Trooping the Colour proves it.

The Duchess of Cambridge doesn't often wear low-cut dresses, but this deep green Jenny Packham gown with a portrait neckline gave the royal a chance to show off her more sensual side while staying classic.