Catherine, Princess of Wales has made a surprise appearance in Southport, north-west England, to meet the families of several children killed in a stabbing attack there earlier this year.
It was Princess Catherine's first official public function since she announced last month she was no longer receiving chemotherapy.
The royal revealed she had cancer earlier this year, and her public appearances since then have been scarce.
Three children were killed and 10 other people were injured in the Southport attack, which took place at a Taylor Swift-themed dance class on July 29.
An 18-year-old man, named Axel Rudakubana, has been charged over the incident, which went on to spark multiple riots around the country, fuelled by far-right groups.
On Thursday, Catherine and her husband, the Prince of Wales, spent about 90 minutes speaking to the victims' families.
Later, the couple met first responders to the attack at a local community centre.
At the time it was announced the princess was no longer receiving chemotherapy, Kensington Palace said she would return to a light program of external engagements.
While the specifics of her diagnosis have never been revealed publicly, it's understood her chemotherapy ending does not mean her treatment has finished too.
Her public appearances since her diagnosis was announced in March have been few and far between.
She attended the Trooping the Colour parade in June, and also the Wimbledon tennis championships the next month.
At the time she announced her chemotherapy was ending, the princess said — in a statement — that the past nine months had been "incredibly tough".
During Thursday's visit, local time, the emergency workers told the royal couple of their struggle to deal with the mental toll of the attack.
Catherine urged them to show self-compassion and "look after yourselves".
"You're all heroes," she said.
She also passed on thanks from the victims' families to the first responders.
Bebe King, 6, Elsie Dot Stancombe, 7, and Alice Dasilva Aguiar, 9, were killed in the Southport attack.
The princess told the first responders that the victims' families were "OK" and managing their grief in different ways.
