King Charles steps out in banned item of clothing during major event alongside Camilla and William

During his Westminster Abbey crowning ceremony, King Charles had opted for Royal Navy trousers instead of the controversial breeches.

For Tuesday's reception, he paired the satin breeches with matching black silk stockings, embracing the traditional formal attire that had earlier been deemed unsuitable for his Coronation.

King Charles broke royal protocol at Tuesday's Buckingham Palace reception for the Diplomatic Corps

PA

The King completed his formal ensemble with a garter featuring the Order of the Garter motto "Honi soit qui mal y pense," which translates to "shame on he who thinks ill of it."

Queen Camilla accompanied her husband wearing a navy-blue evening dress by Fiona Clare, paired with the aquamarine ribbon tiara.

It marked the first time Camilla had worn the historic tiara, which features five large aquamarines set within diamond ribbons.

The Prince of Wales attended the reception in matching formal attire, wearing a black evening tailcoat with white shirt, waistcoat and bow tie.

Queen Camilla accompanied her husband wearing a navy-blue evening dress by Fiona Clare, paired with the aquamarine ribbon tiara

PA

The Prince of Wales attended the reception in matching formal attire, wearing a black evening tailcoat with white shirt, waistcoat and bow tie

PA

King Charles hosted a glittering white tie and tiara reception at Buckingham Palace on Tuesday night, welcoming more than 500 members of the 'Diplomatic Corps' to the Palace's State Rooms.

The reception, one of the highlights of the royal calendar, aimed to highlight the crucial role the monarch plays at the heart of British diplomacy.

The event is normally held on the first Tuesday in December but has been brought forward to avoid clashing with the Amir of Qatar's state visit this year.

The biggest reception held at the palace all year welcomed more than 1,500 guests from around 130 countries, with spouses also invited.