How Queen Mary of Denmark is the 'big sister' of style to our own Kate Middleton. And why she's one step ahead - not just when it comes to fashion...

Both were middle-class commoners when they married into their respective royal families. So, perhaps comparisons between  Queen Mary and our own Princess of Wales were inevitable.

The easily missed detail in the photos of Queen Mary's children

The latest birthday portrait of Queen Mary of Denmark 's eldest daughter Princess Isabella has been released - and it features a detail many often fail to pick up on.

Queen Mary of Denmark shares sweet portrait of daughter Princess Isabella - with her adorable dog - to mark her 17th birthday

Queen Mary of Denmark, 52, shared snaps on the official royal family account of her daughter, Princess Isabella, to mark her 17th birthday this weekend.

Mary is marvellous in mauve! Queen of Denmark stuns in purple as she carries out solo engagements

The Queen of Denmark, 52, visited a psychiatric facility and a university in the north of the country this afternoon in two solo engagements.

Queen Mary of Denmark cuts a frosty figure as she looks away from King Frederik on skiing trip to Verbier

The couple, who took over the Danish throne in January appeared very frosty with one another during a March trip to Verbier, an exclusive ski resort in Switzerland.

Queen Mary of Denmark steps out solo again as she opens a deer park in Copenhagen after fans speculate someone 'stayed away' from their Easter holiday

The Australian-born royal, 52, looked the epitome of country chic in a grey patterned jumper, black Seeland Cottage Quilt Lady Waistcoat and floppy hat.

My turn now...The royal mother-daughter pairings who like to share their favourite outfits. (But which of them looks best...?)

When it comes to favourite outfits, why not get a little extra wear down the generations? This applies to royal mother-daughter pairings just as much as anyone else,

Genoveva Casanova 'signs up to hit Spanish TV game show alongside King Felipe of Spain's niece' after photos of her night out with King Frederik of Denmark rocked the monarchy

Genoveva Casanova went into self-imposed exile after photographs of her enjoying a night out in Madrid with the married father-of-four rocked the Danish monarchy late last year.

Can you nail which royal women committed these acts of manicure mutiny?

Being a female royal, whether by birth or marriage, brings with it a long list of protocols when it comes to appearance

Queen Mary of Denmark shows off glamorous new look thanks to 'non-surgical facelift, impeccable skincare routine and fresh makeup approach', expert claims

The mother-of-four, 52, whose husband King Frederik X of Denmark, 55, ascended the throne last month, has debuted a refreshed appearance.

Queen Mary of Denmark, 52, shares sweet photo with her father John Donaldson to mark her first birthday on the throne - after photos of King Frederik's night out with a Mexican socialite rocked the monarchy

The mother-of-four, who is originally from Australia, is celebrating her first birthday since becoming Queen Consort earlier this year.

The little-known beauty, diet and exercise secrets behind Queen Mary's age-defying appearance as she turns 52 years old

As Queen Mary of Denmark turns 52 years old on Monday February 5 FEMAIL takes a look at the health and beauty secrets behind the royal's age-defying looks.

The A-Z of fashion designers that royal women turn to when they REALLY want a regal look. (And, yes, we have Y and Z!) By ELIZA SCARBOROUGH

Perhaps it's natural that many of the leading ladies, from Queen Letizia of Spain to Queen Mary of Denmark, or from Beatrice to Kate, turn to the same designers.

Queen Mary of Denmark carries out her first solo engagement since taking the throne as she congratulates Denmark on securing silver medal in Handball European Championship

The royal, 51, travelled to Cologne, Germany , to support Denmark's men's team on the final day of the 18-day tournament.

Princess Chiara of Bourbon-Two Sicilies who was rumoured to be dating future Danish King stuns in a polka dot suit as she joins her sister and 'momager' at Giorgio Armani show during Paris Fashion Week

The Italian heiress, 19, commanded attention in an eye-catching scarlet polka dot suit as she stepped out at the Giorgio Armani show during Paris Fashion Week.

Mexican socialite Genoveva Casanova deletes her Instagram page after photos of her night out with King Frederik of Denmark rocked the monarchy

Genoveva Casanova had hardly updated her account since she was forced to deny rumours about her friendship with then Prince Frederik following their night out together in Madrid.

Queen Mary of Denmark radiates elegance in Søren le Schmidt coatdress as she accompanies King Frederik to change of throne service

Tasmanian-born Mary, 51, stunned in a custom Søren le Schmidt purple coatdress that was created for the coronation of King Charles III last May.

King Frederik and Queen Mary of Denmark wave to well-wishers as they attend the first Sunday service of the new monarch's reign outside a snowy Aarhus Cathedral - with outgoing queen, Margrethe, joining them

Well-wishers braved the icy weather today in Aarhus to catch a glimpse of their new king and queen attending church for the first time since King Frederik was pronounced monarch on January 14th.

Margrethe of Denmark's abdication was 'damage control' and a 'strategic move' to make her daughter-in-law Queen and avoid 'Mary divorcing Frederik' following 'affair' rumours, claims royal expert

Royal reporter Kenth G. Madsen says Margrethe's decision to step back from her role could have been a deliberate decision to preserve the Danish monarchy as she'd envisaged it.

First official portraits of King Frederik and Queen Mary as monarch are released as they pose with four children

The regal portrait, which was posted to the Danish Royal Family 's Instagram page this morning, was photographed from inside the royal Christiansborg Palace in Copenhagen.

As Margrethe steps down in Denmark, Europe's palaces are braced for a wave of change. So meet the new (and very female) future...

European royalty is entering uncharted waters - the more so as widespread legal changes mean that in the majority of countries, girls are now entitled to inherit the crown.