Kate Middleton in pictures: The best looks from the off-duty Duchess of Cambridge

Kate Middleton, 36, swapped her classic formal look for a more laid-back style when she was spotted at a charity polo match this weekend.

The mother-of-three arrived at Beaufort Park in Gloucester to watch her husband Prince William, 35, play in the Maserati Royal Charity Polo Trophy.

The Duchess of Cambridge wore a beautiful off-the-shoulder stripped summer dress which cost £39.99 from high street store Zara.

Kate paired the look with a pair of Russell and Bromley espadrille wedges.

The pretty dress perfectly showed off Kate’s post-baby body just two months after the birth of her third child Prince Louis.

The stylish royal looked happy as she ran around the field and played with Prince George, four, and Princess Charlotte, three.

The off-duty Duchess made her appearance one day after the Royal Family were pictured at Buckingham Palace for the Trooping The Colour ceremony and flyby to mark the Queen’s official birthday.

Look through this gallery to see Kate Middleton’s best casual looks and chic off-duty style.

Pictures show the Duchess of Cambridge at a number of sporty event proving she can look cool in trainers as well as the more formal outfits we have come to associate her with.