Queen Mary of Denmark stuns onlookers with surprise visit to Australia as she shows off athletic frame on Sydney's Bronte Beach

Queen Mary of Denmark made a surprise visit to Australia this week as she was spotted flaunting her frame at Bronte Beach on Wednesday .

The monarch, 52, donned casual athleisure wear as she made an appearance in Sydney with her 13-year-old daughter Josephine.

Garbed all in black, the mother-of-four was notably without husband King Frederik following the anniversary of his affair rumours—which were strenuously denied.

The royal couple were plagued with speculation of marital struggles after the King, 56, was pictured in Madrid with Mexican socialite Genoveva Casanova last October.

But Queen Mary appeared to be all smiles on Wednesday as she enjoyed some fun in the sun with her daughter and a friend in her home country.

The Tasmanian-born royalty, who was last in Australia for a personal visit in December, donned a long-sleeved black shirt and shorts for her outing.

At one point, she was spotted jogging through the sand with a friend as she pulled her brunette tresses back into a ponytail.

Hiding her face behind a pair of dark shades and a cap, Queen Mary pulled off her shirt to reveal a tank top underneath when it became too hot.

Queen Mary last visited Australia in December with her youngest children, twins Prince Vincent and Princess Josephine, both 13, to spend Christmas with her family.

While the trip was a personal one, with the Queen keeping a low profile without her husband present, the monarch had an official royal engagement in Australia just months earlier.

She visited Sydney for a day in late April 2023 to 'participate in an event with Danish business representatives involved in the green transition in Australia, as well as visit a number of Danish-clad projects related to sustainable construction and transport'.

Queen Mary's trip Down Under comes one year after her marriage to King Frederik was plagued with rumours of marital struggles after he was pictured out in Madrid with Mexican socialite Genoveva Casanova, 47, on October 25, 2023.

During a 'private visit' to Madrid, the King, who was then the Crown Prince of Denmark, was seen strolling through the city with the TV personality.

While wife Queen Mary, the Princess of Denmark at the time, was away on royal business in New York, the King attended a Pablo Picasso exhibit with Genoveva before sharing a private dinner at a traditional Flamenco restaurant until the early hours, as reported by a Spanish publication.

Following publication of photos which showed the King and Genoveva on their evening out, rumours of an affair between the pair circulated—which were strenuously denied by Genoveva.

However cracks began to appear in Queen Mary and King Frederik's relationship following his night out with Genoveva, and the couple, who have been married for 20 years, displayed frosty body language towards each other in public appearances.

It's unclear where King Frederik was on Wednesday as the Queen jetted to Australia.

However, the pair were spotted together just last week as they were welcomed by German President Frank-Walter Steinmeier and First Lady Elke Büdenbender in Berlin.