The SNP, Conservatives, Labour, Greens and Lib Dems have all expressed their concern and support for Kate who announced in a video message on Friday that she has began receiving treatment.
In her statement, posted on the prince and princess’s joint X account, she explained that, when receiving abdominal treatment in January, she was unaware that there was cancer present.
However, after tests, the operation found “cancer had been present”, she said, and, as a precaution, she is undergoing “a course of preventative chemotherapy” and says she is in the early stages of treatment.
Humza Yousaf, the First Minister of Scotland, gave his support to the princess.
In a statement posted on X, he wrote: “I’m deeply saddened to hear the news about the Princess of Wales/Duchess of Rothesay.
“I am praying for her swift recovery.
“It must be an incredibly difficult time for the whole family.
“Royalty or otherwise, she has a right to privacy, which I hope will be respected.”
Douglas Ross, leader of the Scottish Conservatives, also expressed his support for the princess.
In a statement sent via the party’s press office, he said: “I join people across the world in sending my best wishes to Her Royal Highness for a full and speedy recovery, following her dignified and courageous statement.
“So many people will be able to relate to this situation because of their own experience with cancer, or that of a loved one.
“My thoughts are with the Duchess of Rothesay and the entire Royal Family as she begins her treatment.”
Anas Sarwar, leader of Scottish Labour, said Kate was “courageous” for posting the video statement.
On X, he wrote: “This is a courageous video from the Duchess of Rothesay.
“My thoughts are with her, her husband and children, and all of the Royal Family.
“We wish her a full and speedy recovery.”
Alex-Cole Hamilton, leader of the Scottish Liberal Democrats, wrote on X: “On behalf of the (Scottish Liberal Democrats) I’d like to wish the Princess of Wales all the very best on her journey to recovery following her diagnosis.
A spokesperson for the Scottish Green Party wished the princess a quick recovery.
They said: “As with all those suffering from cancer, we would wish Catherine a speedy recovery.”
Kate said she has explained “everything” to her children, George, Louis and Charlotte, and has reassured them she will be OK, adding that the family has asked for “time, space and privacy” as she undergoes treatment.