When Meghan Markle married Prince Harry in May 2018, she described their picturesque nuptials as a 'modern fairytale'.

St George's Chapel in Windsor was flooded with people desperate to catch a glimpse of the new princess.

But as the newlyweds rode into the distance, Harry made a rather embarrassing comment to his new bride - a brief moment of normality amid the royal fantasy.

Following the ceremony, the couple stood at the top of the chapel's steps and shared their first kiss as husband and wife to the sound of rapturous applause.

Then, while the Kingdom Choir harmoniously sang 'this little light of mine', the Duke and Duchess boarded their horse-drawn open-top Ascot Landau carriage to begin their celebratory ride through Windsor.

While for Meghan this was an experience like no other, Harry, whose entire life had been littered with royal engagements, had become slightly distracted by his outfit choice.

The prince, who donned slim-fitting military trousers referred to as 'overalls', made a humorous comment to his wife as they boarded their carriage, according to royal authors Omid Scobie and Carolyn Durand in their book Finding Freedom.

Describing the contrasting words from the pair, Mr Scobie and Ms Durand wrote: 'Lifting her hand to her chest, Meghan had just one word when she saw the huge crowds gathered on the grounds of the castle: "wow".

When Meghan Markle married Prince Harry in May 2018, she described their nuptials as a 'modern fairytale'. But as the newlyweds rode into the distance, Harry made a rather awkward comment to his new bride

Following their ceremony, the couple stood at the top of the chapel's steps and shared their first kiss as husband and wife to the sound of rapturous applause

'Sitting down in the carriage beside his bride, Harry laughed that his trousers were "too tight".'

Indeed, previous analysis of Harry on his big day by expert lip readers suggested that he had made additional complaints about his military uniform being slightly on the small side while waiting to greet Meghan at the alter.

It was previously claimed that while the Duke stood anxiously at the end of the aisle in anticipation of his bride, he turned to his brother and best man, Prince William, and said: 'I'm alright,' before joking 'my trousers are too tight.'

But as the royal couple left the medieval chapel, lip reader Larry Wenig previously told Inside Edition that rather than seeming out of place, it was the Duchess who took the lead in staging their fairytale kiss in front of the world.

'Okay, let's kiss,' she said under her breath. Harry obeyed and licked his lips before leaning in to peck her as the crowds roared.

'She's already leading the way,' a journalist from Inside Edition told Wenig. 'The strong feminist that she is!'

Meanwhile, additional analysis from lip readers suggested that as the horse-drawn carriage finished its climb up Windsor's Long Walk, Harry quipped: 'I'm ready for a drink now.'

And another striking moment caught by lip readers showed Meghan seemingly dropping the 'F-bomb'.

Writing in Finding Freedom, royal authors Omid Scobie and Carolyn Durand said the prince, who donned slim-fitting military trousers referred to as 'overalls', 'laughed that his trousers were "too tight" after getting into the carriage with his new wife'

As the Duke and Duchess of Sussex travelled through Windsor in a horse-drawn carriage, Meghan turned to Harry and seemingly said, 'Oh f***!' as she put her hand over her chest.

Social media went into a frenzy as viewers began to question what had just occurred, with some suggesting she had been so overwhelmed by the occasion, it had just slipped out.

Media outlets suggested that perhaps the candid moment had occurred due to Meghan assuming that since the carriage had finished its climb up the Long Walk, the crowds were behind her and she was entirely out of view.

The Daily Star claimed she 'couldn't be blamed for her reaction' as she was faced with 'incredible scenes' of thousands of fans screaming her name.

US magazine The List said in a video: 'Hey, it can happen to the best of us, especially if you are not used to getting driven around in carriages.'

While Metro wrote: 'To be fair, doing an open-top procession in front of 100,000 people is not your everyday event.

'So if she did have a momentary loss of control of her language, we think she can be forgiven.'

Whether she cursed remains up for debate, as no members of the public were close enough to hear the details of couple's exchange.

Additional analysis from lip readers suggested that as the horse-drawn carriage finished its climb up Windsor's Long Walk, Harry quipped: 'I'm ready for a drink now.' And another striking moment caught by lip readers showed Meghan seemingly dropping the 'F-bomb'

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During the ceremony, Harry and William wore the frockcoat uniform of the blues and Royals, part of the Household Cavalry of the British Army, featuring a three-quarter scarlet stripe.

The groom's trousers, or 'overalls', were made from a blue and black wool barathea and fastened by a leather strap and buckle beneath the boot.

Harry's single-breasted frockcoat was made from blue doeskin with a stand-up collar, accompanied by figured braiding of regimental pattern.

His sleeve pattern, which was handmade, took one individual a week to complete, while the Duke's frockcoat was ranked to Major with large gold embroidered crowns.

Unconventionally, Harry also chose to sport a beard, despite significant speculation in the build-up that he would shave it off in line with the Army's rules on facial hair.

However, given the Duke was no longer serving as a member of the forces, he was able to break with convention - perhaps an indication of the Prince's unashamed nature to deviate from the norm.

During the ceremony, Harry and William wore the frockcoat uniform of the blues and Royals, part of the Household Cavalry of the British Army, featuring a three-quarter scarlet stripe. Unconventionally, Harry also sported a beard

Meghan wore an Audrey Hepburn-inspired floor-length gown crafted by French fashion house Givenchy and Clare Waight Keller, their first female artistic director. Featuring long sleeves and a bateau neckline, the gown cost £100,000

Indeed, such deviation was also replicated by his bride's controversial dress design.

She wore an Audrey Hepburn-inspired floor-length gown crafted by French fashion house Givenchy and Clare Waight Keller, their first female artistic director.

Featuring long sleeves and a bateau neckline, a nod to the iconic Givenchy dress in the 1957 movie Funny Face, the incredible gown came at a cost of £100,000.

It referenced the codes of the iconic House of Givenchy, showcasing the expert craftsmanship of its world-renowned Parisian couture atelier which was founded in 1952.

Meghan was followed by a cathedral-length, five metre veil, trimmed with lace which depicted flora from each of the 53 Commonwealth countries at the time.

Acclaimed Royal author Ingrid Steward, writing in her book My Mother and I, said that 'the Queen had made only one remark about Meghan and Harry's wedding and that was that Meghan's Givenchy wedding gown was "too white"' given her status as a divorcee

On the day of the wedding, eagle-eyed royal observers noticed the Queen's stern face as she looked at Meghan in her wedding dress

However, not all of the Firm were quite as taken by the Duke and Duchess breaking from tradition.

Acclaimed Royal author Ingrid Steward, writing in her book, My Mother and I, revealed that the late Queen allegedly took issue with the colour of Meghan's dress given her status as a divorcee.

The royal biographer wrote: 'The Queen never voiced her true opinions except to her close confidants, such as Lady Elizabeth Anson, or Liza as she was known to her friends.

'She told me that the Queen had made only one remark about Meghan and Harry's wedding and that was that Meghan's Givenchy wedding gown was "too white".

'Those two words embraced everything she felt about the dramas in the run-up to the marriage and the Disneyesque spectacle of the day itself.

'In the monarch's view, it was not appropriate for a divorcee getting remarried in church to look quite so flamboyantly virginal.'

Meghan had previously been married to Hollywood film producer Trevor Engelson between 2011 and 2013.

Queen Camilla, who had previously been married to Andrew Parker Bowles between 1973 and 1995, stuck with tradition and opted not to wear white for her wedding to Charles in 2005. Pictured: Charles walking Meghan down the aisle

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Queen Camilla, who had previously been married to Andrew Parker Bowles between 1973 and 1995, stuck with tradition and opted not to wear white for her wedding to Charles in 2005.

Instead she wore a pale blue chiffon dress and coat with gold embroidery.

Meanwhile, Katie Nicholl, in her book The New Royals, also reported that the late Queen was left 'surprised' after being informed by a source that Meghan had chosen to wear white to the ceremony.

She wrote: 'Perhaps it's a generational thing, but she believes if you've been married before, you wear off-white on your wedding day, which is what the Duchess of Cornwall did.'

Indeed, it was later claimed by Lady Elizabeth Anson, great-niece of the Queen Mother and goddaughter of King George VI, that the Queen was 'not at all content' by the time she was sat in the pews during the ceremony.

It was later claimed by Lady Elizabeth Anson (pictured), great-niece of the Queen Mother and goddaughter of King George VI , that the Queen was 'not at all content' by the time she was sat in the pews during the ceremony

Read More The Queen's dismay over Meghan and Harry's 'uncomfortable' wedding change

Meanwhile, Prince Philip would also allegedly go on to make comparisons between Meghan and Wallis Simpson, the American divorcee whom Edward VIII abdicated to marry.

Mr Seward claims he was 'one of the few wary' of being charmed by Meghan and thought it was 'uncanny' how much she reminded him of the socialite Simpson.

He even had a nickname for her - DoW, after Simpson, the Duchess of Windsor.

However, twice-divorced Simpson did not opt to wear white when she married Edward in 1937, instead choosing pale blue.

Fashion designer Clare Waight Keller, then of Givenchy, who worked alongside Meghan on the dress insisted that she wanted to create a 'timeless piece' that would also 'convey modernity'.

Appearing in the Sussexes' Netflix series, Ms Waight Keller said that Meghan's dress had to be 'flawless', with the Duchess hoping to 'carve out' a new style of royal dressing.

Embarrassing moment Prince Harry shared with Meghan Markle at wedding