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Kate Middleton wows in an identical dress to that of Princess Mary of Denmark

They were called unofficial ‘royal sisters’ by their late Chanel designer Karl Lagerfeld strikingly similar appearance and similar taste in fashion.

So, it may come as no surprise that the Duchess of Cambridge once again seemed to take on style features this week from Danish princess Mary – with Kate, 38, who wore a deep blue £ 525 Beulah London dress, spotted on the first year last year. Australian-born royal.

Along with her husband, Prince William, 38, during a visit to Queen Elizabeth Hospital in King’s Lynn, near their Norfolk home at Anmer Hall, on Sunday to mark the NHS’s 72nd anniversary, Kate combined the outfit with matching heels and earrings.

Meanwhile, Mary paired cream-colored heels and earrings with the shirt dress – with a striking white collar and a blue polka dot pattern – on her December trip to Indonesia.

It’s not the first time Mary and Kate have shared styling tips, with royal fans often commenting on how similar the two prospective Queens look.

From their clothes on the slopes to how they dress during public appointments and for official state visits, here FEMAIL reveals the times when the royals proved themselves long-lost style sisters …

Striking pattern dresses

It may come as no surprise that the Duchess of Cambridge once again seemed to be taking on style features this week from Danish princess Mary - with Kate (above), 38, wearing a deep blue £ 525 Beulah London dress

The £ 525 blue dress was previously worn by Princess Mary of Denmark on a visit to Indonesia last December

The £ 525 blue dress was previously worn by Princess Mary of Denmark on a visit to Indonesia last December

It may come as no surprise that the Duchess of Cambridge once again seemed to take on style hallmarks from Danish princess Mary this week – with Kate (pictured left), 38, wearing a deep blue £ 525 Beulah London dress that was first spotted on the Australian-born royal (seen right) last year

Not only are the women a fan of identical polka dot looks, but they've also been seen in similarly pure floral motifs before. On the photo: Mary in 2014

Not only are the women a fan of identical polka dot looks, but they've also been seen in similarly pure floral motifs before. On the photo: Mary in 2014

Kate painted in a similar design to Mary's floral pattern in 2016

Kate painted in a similar design to Mary's floral pattern in 2016

Not only are the women a fan of identical polka dot looks, but they’ve also been seen in similarly pure floral motifs before. Pictured: Mary, left in 2014 and Kate, right in 2016

Both Kate and Mary seem to be fan favorites of patterned dresses, with the royal family often having the look during public engagements.

Kate’s Beulah London dress from £ 525 in blue – a preferred color of the fashionable Duchess – was the same style as the red number she wore for a minute-long mental health report released in May.

The Duchess paired her dress – with a striking large white collar – with matching blue heels and opted for a reclusive hairstyle, as well as £ 800 diamond and yellow gold earrings from designer Patrick Mavros for the visit.

Co-founded by Lady Natasha Rufus Isaacs and Lavinia Brennan in 2010, Beulah London has become a go-to label for Kate, who has stepped into the designs a number of times.

And the dress turned out to be a favorite of Mary’s too, with the princess wearing the stylish garment last December on a trip to Indonesia.

She added an extra color by combining the shirt dress with cream heels and elegant earrings.

Elegant headbands

Kate at the baptism of Meghan Markle and Prince Harry's son Archie

Kate at the baptism of Meghan Markle and Prince Harry's son Archie

In December 2019, Mary (pictured) was inspired by the Duchess by wearing a headband loved by the British Royal Family

In December 2019, Mary (pictured) was inspired by the Duchess by wearing a headband loved by the British Royal Family

In December 2019, Mary (pictured right) was inspired by the Duchess (pictured left in July 2019) by wearing a headband loved by the British Royal Family

Kate also wore a £ 34 'hat band' from Zara for an annual concert honoring those who died in World War I at the Royal Albert Hall (pictured at the event on November 9)

Kate also wore a £ 34 'hat band' from Zara for an annual concert honoring those who died in World War I at the Royal Albert Hall (pictured at the event on November 9)

Kate also wore a £ 34 ‘hat band’ from Zara for an annual concert honoring those who died in World War I at the Royal Albert Hall (pictured at the event on November 9)

In December 2019, Mary was inspired by the Duchess by wearing a style of headband loved by the British Royal Family.

Mary wore a burgundy-colored sequined ‘hat band’ from Jane Taylor London to open a new emergency room at Viborg Regional Hospital, northwest of Copenhagen.

The mother of four, born in Hobart, Tasmania, radiated regal glamor in a burgundy blouse and high-waisted gray midi skirt, adding height with a pair of burgundy pointed-toe stiletto heels.

The ‘hat band’ – a trendy accessory that combines elements of a hat and headband – is regularly seen on Kate, who wore a quirky velvet braided design after the christening of Prince Harry and Meghan Markle’s son, Archie Harrison, in July of that year.

Kate too stepped into a black £ 34 jeweled hair band from fast fashion label Zara for an annual concert honoring those who died in World War I at the Royal Albert Hall on November 9, 2019.

Tartan skirts and jackets

The Duchess of Cambridge has repeatedly shown her love for tartan while looking for her favorite Alexander McQueen coat in Scotland in January (photo)

The Duchess of Cambridge has repeatedly shown her love for tartan while looking for her favorite Alexander McQueen coat in Scotland in January (photo)

While the royals also embrace different patterns, there's one fashion look that both seem to love - with Mary (pictured above in 2019) and the Duchess proving to be fans of tartan

While the royals also embrace different patterns, there's one fashion look that both seem to love - with Mary (pictured above in 2019) and the Duchess proving to be fans of tartan

While the royals also embrace different patterns, there’s one fashion look both seem to love – with Mary (right in 2019) and the Duchess (pictured left in the same year) proving to be fans of tartan

Kate wore a £ 1,500 red skirt (above) from Emilia Wickstead over the Christmas period

Kate wore a £ 1,500 red skirt (above) from Emilia Wickstead over the Christmas period

A day before the Duchess's festive look, Mary wore a £ 1,295 tweed midi skirt from Alexander McQueen (above)

A day before the Duchess's festive look, Mary wore a £ 1,295 tweed midi skirt from Alexander McQueen (above)

Kate wore a £ 1,500 red skirt (pictured left) over the 2019 Christmas season by Emilia Wickstead. A day before the Duchess’ festive look, Mary wore a £ 1,295 tweed midi skirt from Alexander McQueen (pictured right)

While the royals also embrace different patterns, there’s one fashion look both seem to love – with Mary and the Duchess proving to be fans of tartan.

In March 2019 Mary was the last royal to wear a green tartan jacket on tour in Texas, after Kate and Meghan Markle wore similar styles in Scotland.

The Danish queen wore a green-and-black checked coat from Baum und Pferdgarten, which she paired with a black sweater and trousers to beat the cold of the European march.

Princess Mary completed her outfit with a long chain as she traveled through Texas promoting Danish culture and sustainable living.

Meanwhile, Kate has repeatedly exhibited her love for tartan, both for her favorite Alexander McQueen jacket while in Scotland last January, and for a £ 1,500 red skirt over the 2019 Christmas season by Emilia Wickstead.

One day before the Duchess’ festive look, Mary wore a £ 1,295 tweed midi skirt from Alexander McQueen when she attended an event on International Handicap Day in Copenhagen.

Strikingly colorful dresses

The Duchess of Cambridge (pictured) garnered critical acclaim for her red Jenny Packham dress when she attended her first-ever state banquet in 2015 and a clink of glasses with the Chinese president

The Duchess of Cambridge (pictured) garnered critical acclaim for her red Jenny Packham dress when she attended her first-ever state banquet in 2015 and a clink of glasses with the Chinese president

The following year, Princess Mary (pictured) also opted for regal red and a tiara when she rattled glasses with the late Prince Henrik at a state banquet at Fredensborg Palace

The following year, Princess Mary (pictured) also opted for regal red and a tiara when she rattled glasses with the late Prince Henrik at a state banquet at Fredensborg Palace

The Duchess of Cambridge (pictured left) garnered critical acclaim for her red Jenny Packham dress when she attended her first-ever state banquet in 2015 and rattled glasses with the Chinese president. The following year, Princess Mary (see right) also chose royal red

The pair both preferred a block color on occasion (photo), such as royal blue (Kate Middleton pictured in 2016

The pair both preferred a block color on occasion (photo), such as royal blue (Kate Middleton pictured in 2016

Princess Mary depicted in 2017, wearing a very similar dress

Princess Mary depicted in 2017, wearing a very similar dress

The pair both preferred a block color (photo), such as royal blue (Kate Middleton pictured in 2016; Princess Mary pictured in 2017)

The duo are both fans of colorful clothes, as they often wear bright reds, blues and oranges.

Another example was when the duo looked surprisingly similar in a block blue dress, with half-length sleeves and a high round neckline. Kate wore the look in 2016, while Mary treated fans to the outfit in 2017.

They also go together when they each attend a more formal setting, with both favoring red blocks with color blocks to complement their shimmering tiaras in previous years.

The Duchess of Cambridge garnered critical acclaim for her red Jenny Packham dress when she attended her first-ever state banquet in 2015 and rattled glasses with the Chinese president.

The following year, Princess Mary also opted for regal red and a tiara when she rattled with the late Prince Henrik at a state banquet in Fredensborg Palace.

As important faces of two royal families, the couple always show up for events that look sophisticated and stylish.

They often opt for high-neck dresses with modest sleeves and knee-length skirts, and both are sparing with their closets because they see outfits recycle.

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