Her hotly anticipated book, The Other Side of the Coin: The Queen, the Dresser and the Wardrobe, comes out next month.

By Meghan Overdeep
September 29, 2019
WPA Pool/Getty Images

Outside of her family, only a few people are allowed to lay hands on the Queen. And one of them is a woman born in Liverpool to a crane driver and a nurse whose fiery temper has earned her the nickname "AK47."

Under her official title, Her Majesty's Personal Advisor and Curator (The Queen's Jewellery, Insignias and Wardrobe), Angela Kelly serves as Queen Elizabeth's personal designer. But as her close friend and confidant, the 61-year-old has also been called the monarch's "gatekeeper."

Kelly sees the Queen every day, frequently joins her on trips abroad, and even lives on the grounds of Windsor Castle. And as she ages, according to The Telegraph, the 93-year-old Queen has become increasingly reliant on the woman she once told: "We could be sisters."

So, you can imagine the excitement around Kelly's forthcoming book—a book the Queen herself gave her unprecedented permission to write.

The Other Side of the Coin: The Queen, the Dresser and the Wardrobe ($35; Amazon.com) isn't only about royal fashion, but also about her experience working with the British monarch. The book, available on October 29, will include never-before-seen photographs from Angela's private collection as well as and "charming anecdotes" of her time spent with the Queen.

But Kelly's own story is almost as fascinating as her relationship with her royal boss.

Kelly become employed by the Queen by chance. She was housekeeper to Sir Christopher Mallaby when the Queen and the Duke of Edinburgh visited his home in Berlin in October 1992. They reportedly started up a conversation with Kelly, who told the Queen of her plans to return to Britain. Months later she was offered a job as one of the Queen's dressers and started in 1993. Three years later she was promoted to senior dresser, and in 2001 became the Queen's first-ever personal assistant.

"I don't know why the Queen seems fond of me—because I don't give her an easy time!" Kelly told The Telegraph. "I do think she values my opinion, but she is the one who is in control. She always makes the final decision."

"We are two typical women," she added. "We discuss clothes, make-up, jewellery."

WATCH: This Is the Ordinary Word Queen Elizabeth Finds Most "Vulgar"

The Other Side of the Coin: The Queen, the Dresser and the Wardrobe is available for pre-order now. The audiobook, which will be read by Kelly, will be released on the same day.

We can't wait!