Royal rewear: Duchess Kate steps out in recycled Emilia Wickstead dress

The mother-of-three looked particularly fresh despite the fact she had an action-packed day yesterday.

Both wore outfits we've seen previously, with Prince William choosing a classic black and white suit and Kate choosing a long-sleeved lilac dress by designer Emilia Wickstead, which she wore during her royal tour of Germany in 2017.

Wearing a plaid Erdem dress, Kate completed her look with a purple belt and a small clutch.

The event was attended by political figures, experts and policy makers who proceeded to discuss issues such as how to deal with the stigma attached to mental health - a subject very close to the royal's heart.

Middleton attended her first solo royal engagement since her son's birth last week, when she visited the Paddington Recreation Ground in Ewhurst, England to spend time with local school children.

Kate and William also met with Dairo Vargas, a contemporary fine artist from Columbia, who is creating an original piece of art at the summit, inspired by the day's events.

Today's inaugural summit aligns with the couple's Heads Together charity and their targeted focus on mental health awareness, and is being co-hosted by the British government and the Organization for Economic Cooperation and Development (OECD), and they watched two presentations on successful mental health programmes in the U.S. and Slovenia. The style is simple and classic - there's no over embellishment, no painful heel as they are sturdy, they are plain, timeless and easy to wear with a skirt, dress or pants.

It marks Kate's first engagement as patron of the V&A, after being named its first back in March. Recycling fashion at its best.

Vanessa Coleman