Seeing double! All the times Catherine, Duchess of Cambridge has twinned with Crown Princess Mary

In November 2021, Crown Princess Mary took inspiration from one of Kate's most iconic outfits, pairing a tartan skirt with a black blazer in this chic ensemble. The Danish royal put a twist on Kate's original outfit by opting for a muted, textured skirt and pairing it with a tailored blazer instead of Kate's more laid-back cardigan.

On their wedding days, the two brides looked exquisite in their white dresses, lace veils and diamond earrings.

No one does navy blue with white polka dots quite like Kate, but Mary gave the trend a go for her eldest son Prince Christian's religious confirmation service.

Did Catherine's pink dress at Wimbledon 2021 look familiar? That may be because it's an almost exact copy of Mary's chic nude dress by Beulah London, which she wore to attended the opening of an art exhibition in 2020.

Both royal ladies own this chic Emilia Wickstead dress, just in slightly different pastel hues. Mary was spotted in the blue version in Japan in 2015, while Kate was pretty in pink for a London event in 2018.

A chic pink and red floral dress is the perfect outfit for either a first day at your daughter's school or a day out in Texas.

When winter rolls around, there's nothing more snuggly and stylish than a green tartan coat.

Taking blue-blooded to a whole new literal level!

The active royals know their way around a sail boat...and look good in shorts too!

On your marks, get set, go! Both future queens are avid athletes.

We love Catherine's one-shouldered Jenny Packham gown that she wore in 2011 and in the same year, Mary wore a very similar design herself.

In fact, that's not the only time the royals have rocked a one-shouldered look.

Back when the two attended Royal Ascot together, we couldn't help but notice their similar choices of hat.

Same coat, only slightly different colour.

Which Jenny Packham frock do you prefer: Mary's blush pink that she wore for her official 50th birthday portrait or Catherine's emerald green that she donned for the 2021 Royal Variety Performance?

Cheers to these royal fashion icons!