Meghan Markle and Prince Harry Had a Huge Secret in This Photo from the Toronto Invictus Games

Meghan even hinted at the big news with her outfit choice — yet their secret remained undetected

Meghan Markle and Prince Harry were hiding something major during their first official outing together.

The couple made their public debut at the Toronto Invictus Games in September 2017 after over a year of dating, holding hands and smiling as they headed to watch wheelchair tennis. But there was a secret reason for their look of love: they were already engaged, according to the new book Finding Freedom: Harry and Meghan and the Making of a Modern Royal Family.

Meghan hinted at the big news in a subtle way — she wore a classic white button-down shirt dubbed the "Husband Shirt" from her designer friend Misha Nonoo's collection — yet their secret went undetected.

<a href="" data-inlink="true">Prince Harry</a> and <a href="" data-inlink="true">Meghan Markle</a> attend the Tennis together at the Invictus Games in Toronto
Meghan Markle and Prince Harry. Splash News Online

Two months later, on November 27, Clarence House announced Meghan and Prince Harry's engagement — but the couple continued to hold back on revealing the exact date of when they actually got engaged.

"It happened a few weeks ago, earlier this month, here at our cottage; just a standard typical night for us," Harry said during their engagement interview.

<a href="" data-inlink="true">Prince Harry</a> and <a href="" data-inlink="true">Meghan Markle</a> at the 2017 Invictus Games
Meghan Markle and Prince Harry at the Toronto Invictus Games in 2017. Danny Lawson/PA Images/

Meghan added that the proposal happened on a "cozy night" while they were making a dinner of roasted chicken.

"It just – just an amazing surprise, it was so sweet and natural and very romantic," she said. "He got on one knee."

Announcement Of <a href="" data-inlink="true">Prince Harry</a>'s Engagement To <a href="" data-inlink="true">Meghan Markle</a>
Samir Hussein/WireImage

Finding Freedom, co-authored by Omid Scobie and Carolyn Durand, explores the Duke and Duchess of Sussex's journey, starting from the early days of their fast-moving romance and culminating in their decision to step down as senior members of the royal family and move to Los Angeles with son Archie.

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A spokesperson for Meghan, 38, and Harry, 35, previously said in a statement, "The Duke and Duchess of Sussex were not interviewed and did not contribute to Finding Freedom. This book is based on the authors’ own experiences as members of the royal press corps and their own independent reporting."

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