Queen Elizabeth II has fired her official bra-fitter after she wrote an autobiography involving her professional relationship with the royal family.

After nearly 60 years of service, the Queen's official lingerie supplier Rigby & Peller has been stripped of its royal warrant after (the company's board member and former owner) June Kenton, 82, released a tell-all memoir of her career, dubbed Storm in a D-Cup.

A royal warrant of appointment is a mark of recognition to those who supply goods or services to members of the royal family, which only about 800 businesses have.

On Jan. 10, the Royal Warrant Holders Association confirmed to PEOPLE that Kenton's longstanding relationship with the British monarch had ended last year, which was during the same time frame the book came out.

"I never thought when I was writing the book that it would upset anyone," Kenton said. "I've had the royal warrant for so long, I never imagined that this would happen. It's horrible and a real shock."

But Kenton wasn't the only one to speak out on the surprise dismissal.

Rigby & Peller - who has more than 30 stores in Europe and Asia - also released a statement, depicting the company's disappointment.

"Rigby & Peller is deeply saddened by this decision and is not able to elaborate further on the cancellation out of respect for Her Majesty the Queen and the Royal Warrant Holders Association," the statement said.

In her book, Kenton revisits what went on behind the scenes at the bra fittings at Buckingham Palace, including visiting the Queen in her private quarters, with her beloved corgis running around at their feet.

"I only ever said I went there, not what happened. I have never, ever spoken about what I do there with her, or the Queen Mother, or Princess Margaret," Kenton told the BBC. "I think it's unbelievable. It's just upsetting at the end of my life, but what can I do. I can't fight with Buckingham Palace and I wouldn't want to, but it's hard."

Kenton's autobiography also touches on how Princess Diana took home posters of lingerie models from the store for Prince William and Prince Harry to decorate their bedroom walls, and also dished on private conversations between the Queen Mother and Princess Margaret.

Despite her turmoil, Kenton admitted she didn't send the British monarch a copy of her book prior to its release.

"I've been honourable throughout my life - it's unbelievable they don't like the book, there's nothing in it that they could remotely be upset about," Kenton said. "It's a sweet story of a corsetiere.

"I probably should have submitted it to them but I didn't think anything would be required."

Do you think the Queen should have revoked the company's royal warrant?