KATE MIDDLETON HAS she will make her first public appearance in six months this weekend after “making good progress” in treatment for cancer.

The 42-year-old future queen will attend King Charles III’s annual birthday parade tomorrow with other senior royals, which the British monarch is participating in despite his own cancer battle.

Though her official title is Catherine, Princess of Wales, she is widely known as Kate. She said in a statement she was “not out of the woods yet” but that she hoped to join in “a few public engagements over the summer”.

“I am making good progress, but as anyone going through chemotherapy will know, there are good days and bad days,” she said, adding treatment for the unspecified cancer would continue “for a few more months”.

“On those bad days you feel weak, tired and you have to give in to your body resting. But on the good days, when you feel stronger, you want to make the most of feeling well.”

Kate, married to heir-to-the-throne Prince William and mother to their three young children, noted that she has started to do “a little work from home” on days when she “feels well enough”.

“It is a joy to engage with school life, spend personal time on the things that give me energy and positivity,” she added.

Middleton said she was “looking forward to the king’s birthday parade this weekend with my family” while noting her intention to attend other events in the coming months.

Her statement, first released on social media channels, was accompanied by a photograph — taken earlier this week in Windsor, west of London — of the princess standing in front of a tree next to a river.

King Charles (75) also recently revealed that he was being treated for an unspecified cancer, leaving the British monarchy in crisis with two of its most senior members simultaneously fighting serious illness.

Charles was just 17 months into his long-awaited reign when Buckingham Palace announced in early February that he would be pausing all public-facing engagements as he commenced treatment.

He had undergone surgery for a benign prostate condition in January but was subsequently diagnosed with an unrelated cancer. The type of cancer has not been disclosed.

He continued with behind-the-scenes work and holding some in-person meetings and in April royal officials said doctors were “very encouraged” by his progress, allowing him to resume his official duties.

However, he will participate in this year’s birthday parade from a carriage, rather than on horseback as he did at his inaugural parade as king last year.

It was the first time the monarch had ridden at it since his mother, Queen Elizabeth II, in 1986.