Princess Mary of Denmark celebrated her 48th birthday on the ski slopes in Verbier

Crown Princess Mary of Denmark celebrated her birthday on the piste in Verbier with husband Crown Prince Frederik and pals – after dropping the children at school.

The mother-of-four, who turned 48 yesterday, glided down the slopes and queued for lifts with other skiers and snowboarders in the Swiss resort.

The royal couple and their friends took advantage of the sunny, crisp winter day and looked very relaxed as they made the most of the fresh powder.

Meanwhile the couple’s children Prince Christian, 14, Princess Isabella, 12, Prince Vincent, nine, and Princess Josephine, also nine, were at Lemania-Verbier International School, which they have been attending for a month. 

Crown Princess Mary of Denmark celebrated her birthday on the piste in Verbier, Switzerland yesterday

Princess Mary was joined by her husband Crown Prince Frederik and pals - after dropping the children at school

Princess Mary was joined by her husband Crown Prince Frederik and pals - after dropping the children at school

Princess Mary was joined by her husband Crown Prince Frederik and pals – after dropping the children at school

The royal couple looked relaxed as they queued for lifts with other skiers and snowboarders in the Swiss resort

The royal couple looked relaxed as they queued for lifts with other skiers and snowboarders in the Swiss resort

Princess Mary sported a relatively low-key ski outfit, donning a blue-grey jacket and black salopettes, but jazzed up her look with exotic floral goggles and a gold metallic helmet. 

Yesterday the palace shared an age-defying portrait of the Tasmanian-born princess looking the epitome of elegance in a navy blue wrap dress by Issa London, aquamarine diamond drop earrings and an Orit Elhanati necklace.

The photograph was taken by Copenhagen-based photographer Daniel Stjerne and shared on the Danish Royal Family’s Instagram page.

Last month Princess Mary and Prince Frederik came under fire after revealing they have made money from a private Swiss ski lodge they have secretly owned for 10 years. 

The couple chatted as they blended in with members of the public also enjoying a day out on the slopes

The couple chatted as they blended in with members of the public also enjoying a day out on the slopes

While in the queue for the lifts, Crown Prince Frederik took a phone call

While in the queue for the lifts, Crown Prince Frederik looked in high spirits

While in the queue for the lifts, Crown Prince Frederik took a phone call and looked in high spirits

Last month Princess Mary and Prince Frederik came under fire after revealing they have made money from a private Swiss ski lodge they have secretly owned for 10 years

Last month Princess Mary and Prince Frederik came under fire after revealing they have made money from a private Swiss ski lodge they have secretly owned for 10 years

The news caused consternation in their home country’s parliament when Prince Frederik announced they would be spending their 12-week stay in Switzerland at their personal villa. 

He went on to explain that they have owned the property in Verbier, one of the world’s most exclusive ski resorts popular among the British royals, for a decade and rent it out when they’re not using it.

When it was purchased, Princess Mary registered it under her maiden name, Mary Donaldson, The Daily Telegraph reported.

Her husband referred to himself as Prince Frederik of Denmark on documents pertaining to the property, the publication reported.

Princess Mary sported a relatively low-key ski outfit, donning a blue-grey jacket and black salopettes

Princess Mary sported a relatively low-key ski outfit, donning a blue-grey jacket and black salopettes

Princess Mary sported a relatively low-key ski outfit, donning a blue-grey jacket and black salopettes, but jazzed up her look with exotic floral goggles and a gold metallic helmet

The couple and their friends made the most of the sunny winter day in Verbier, where they own a luxurious ski lodge

The couple and their friends made the most of the sunny winter day in Verbier, where they own a luxurious ski lodge

It later emerged the couple charged guests £7,290 a week to rent the luxurious  wooden lodge which boasts three bathrooms, a sauna, spa and a heating room for guests to dry out their ski gear after a day on the slopes.

The Verbier property can sleep up to 10 people and was rented on Airbnb prior to the revelation it was owned by the royal couple.

Pictures advertising the property surfaced after a spokeswoman for the couple confirmed it would no longer be available to rent due to privacy concerns.

Crown Princess Mary and Crown Prince Frederik were joined by a couple of pals yesterday for the birthday outing

Crown Princess Mary and Crown Prince Frederik were joined by a couple of pals yesterday for the birthday outing

Crown Prince Frederik showed off his skills as he glided down the slopes on the fresh powder yesterday

Crown Prince Frederik showed off his skills as he glided down the slopes on the fresh powder yesterday

Crown Prince Frederik showed off his skills as he glided down the slopes on the fresh powder yesterday

The couple's children Prince Christian, 14, Princess Isabella, 12, Prince Vincent, nine, and Princess Josephine, also nine, usually attend the Tranegård School in Gentofte, Denmark, but are attending a Swiss boarding school for three months in Bagnes to give them a more international experience

The couple’s children Prince Christian, 14, Princess Isabella, 12, Prince Vincent, nine, and Princess Josephine, also nine, usually attend the Tranegård School in Gentofte, Denmark, but are attending a Swiss boarding school for three months in Bagnes to give them a more international experience

The secluded chalet features a fireplace, timber walls, ceilings and floorboards, as well as large windows looking onto the ski resort.

The Danish royal family lives on a public allowance that is only allowed to be spent on foreign assets with the approval of lawmakers. 

Their children usually attend the Tranegård School in Gentofte, Denmark, but are attending a Swiss boarding school for three months in Bagnes to give them a more international experience. 

Princess Mary is staying with them while they are in school, and Prince Frederik will travel between there and Denmark for his official duties. 

Yesterday the palace shared an age-defying portrait of the Tasmanian-born princess looking the epitome of elegance in a navy blue wrap dress by Issa London, aquamarine diamond drop earrings and an Orit Elhanati necklace to mark her 48th birthday

Yesterday the palace shared an age-defying portrait of the Tasmanian-born princess looking the epitome of elegance in a navy blue wrap dress by Issa London, aquamarine diamond drop earrings and an Orit Elhanati necklace to mark her 48th birthday

Read more at DailyMail.co.uk