Kate Middleton kept her cancer a secret for months, with several preparations having to be made behind the scenes.

According to royal sources, only a few knew of her illness. The Princess wanted to make plans to return, but keep it a secret from the prying eyes of the public.

When she realised she could attend the Trooping of the Colour in June, everyone was pleased. personally called her father-in-law, King Charles - also undergoing cancer treatment - to tell him the good news, and he was understandably 'delighted' she could attend, reports the Mirror.

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Well aware of the buzz that would surround her return, Kate wanted to keep things low-key - and that approach even extended to her wardrobe. Rather than shop around for a new dress - news of which could be made public - she chose to upcycle a white dress she first wore on the eve of King Charles' Coronation last year.

Kate Middleton
Kate Middleton surprised fans at the Trooping of the Colour

The simple white and black dress by British designer Jenny Packham was updated with black trim and ribbon embellishment on the neckline, as well as a black belt, and she wore a hat by Philip Treacy, and her Cassandra Goad Cavolfiore pearl studs — previously worn to Prince Louis' christening in 2018 and Wimbledon in 2023.

Reusing the dress not only made a sustainable fashion statement, but it also served another purpose.

"Just by reworking what she already owns, it allowed Kate to keep this secret [of her appearance] within her very closest and most trusted team," said Bethan Holt, Fashion Director at the Telegraph.

“We definitely know that Kate has tailors in house to help make something fit her perfectly, and they could have easily added the new belt and that bow detail at the neckline, so Jenny Packham may not have even known Kate was going to re-wear the dress.”

Kate Middleton
Kate has been dealing with her cancer privately

However, Holt further noted that Packham is one of Kate's 'most trusted' designers - demonstrated by the fact Kate has worn a custom Packham dress every time she left hospital with each one of her newborn children. "Those are very intimate, important moments, so it’s a natural decision that Kate would turn to Jenny once again," the fashion director noted.

According to Page Six, behind the scenes on the day of the parade, staff at both Buckingham Palace and Kensington Palace worked together to ensure there would be appropriate contingencies if Kate felt unwell or unable to travel, given that it was her first public event in six months and the fact she was still undergoing chemotherapy.

But aside from those closest to Kate, there was one other person who likely knew of her return - royal photographer Matt Porteous. The Princess called upon Matt for a special photoshoot at her Adelaide Cottage home in order to share an update with well-wishers.

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