In her mother's footsteps: Princess Beatrice joins Fergie on a healthy jog

The duo, both dressed in knee-length leggings and tees, built up a sweat as they pounded the pavement together on an early morning run.

On the run: Fergie and Princess Beatrice worked out together in Spain today

Fergie is enjoying a rare family holiday with her two children, who have enjoyed vacations with their cousins and Beatrice's boyfriend Dave Clark this year.

As well as spending time together, the holiday has been an opportunity for the trio to celebrate Princess Eugenie's brilliant A'level results and Princess Beatrice's 20th birthday two weeks ago.

Last Thursday, a delighted Eugenie received A grades in Art and English Literature and B in History Of Art after graduating from Marlborough College in Wiltshire.

Taking the Mickey: Beatrice showed her playful side with a Mickey Mouse tee

Eugenie's A'level results mean she is the brightest  young royal after acheiving higher grades than her cousins Princes William and Harry and sister Beatrice.

She is planning to take a gap year before going to university in 2009.

Meanwhile, Beatrice is gearing up to start a degree at Goldsmiths College in London next month after travelling around the world during her gap year.

She is said to be keen to do charity work and there are tentative plans for her to visit an orphanage in Romania with her mother later this year.

Cool down: The pair take it easy on the home stretch

Family affair: A day earlier, Fergie spent the day with Beatrice and Eugenie at the Spanish polo