Kate Middleton pictured at Trooping the Colour in first public photo after cancer diagnosis

The Princess of Wales has been pictured for the first time in public after she revealed she has been diagnosed with cancer.

In March, Kate Middleton issued a statement saying she had been undergoing treatment for the disease for a few weeks. She has not been seen in public since the announcement and has missed engagements at the start of the year when she was admitted to hospital for abdominal surgery on January 16.

Today (Saturday, June 15), Kate has made her first public appearance at Trooping the Colour. The Princess was joined by her three children, Prince George, Princess Charlotte and Prince Louis, in a carriage for the traditional procession down the Mall in honour of King Charles III birthday.

READ MORE: Kate Middleton makes first appearance after cancer diagnosis at Trooping the Colour - updates

Pictured alongside her children and Prince William in a royal car, she is wearing a cream suit and fascinator.

They will gather later today with other royals on Buckingham Palace’s balcony for the fly-past.

Trooping will not mark the start of a return to full-time duties, and Kate has no plans to attend the Garter Day service on Monday or Royal Ascot, as she is still undergoing treatment, with the Royal appearing to indicate in her statement it will last until the end of summer.

In an update issued yesterday (Friday), the Princess said she has 'good days and bad days' but was 'not out of the woods just yet'. You can read her statement in full here.

A new photograph of the royal, taken earlier this week in the grounds of the Windsor Castle estate, also showed Kate in a smart casual outfit stood in a tranquil setting against a weeping willow tree near a body of water.

The King, who is also undergoing cancer treatment, will not ride during the ceremony but will inspect the troops formed up in Horse Guards Parade in Whitehall from a carriage.