When?

Where?

St George's Chapel at Windsor Castle - the same place that Prince Harry and Meghan tied the knot.

Image:The Duke and Duchess of Sussex on their wedding day

The planning

It's been tricky finding a date that works for all the busy royals, with the Queen often spending August and September at her Balmoral estate and Prince Harry and Meghan due to jet off to Sydney for the Invictus Games which start on 20 October.

Image:Eugenie at Royal Ascot with her big sister Beatrice

Prince Andrew described the scheduling of the date as "complicated", but they finally managed to settle on one that worked.

Image:Eugenie is very close to both her mother and her sister

Mother-of-the-bride, Sarah the Duchess of York, who has been helping Eugenie with the planning, described her daughter as "very controlled".

"She is so sorted. She knows exactly what she wants", Sarah said in a recent interview on The One Show.

Despite saying that the whole thing is "nerve-wracking because you want it to be perfect", Eugenie says she hasn't got "stressed at all" during the prep.

The engagement

The couple got engaged during a holiday in Nicaragua in January 2018, when Jack got down on one knee to propose.

1:05

Video:Eugenie: An 'incredible' proposal

Eugenie said his proposal - which was framed by "the setting sun, a volcano and birds flying" - was a "complete surprise".

The Stowe-educated 32-year-old was formerly the manager of Mayfair nightclub Mahiki.

Keen to enter the world of work, Jack skipped university, going straight out to work in the hospitality industry after finishing school.

Image:Eugenie and Jack at Goodwood Racecourse

He's also said to have his own aristocratic connections, linking him to the royal family through the 19th-century earl Thomas William Coke.

That makes him a distant relation of Eugenie - third cousins once removed, according to Business Insider.

Wedding invites

Eugenie and Jack's wedding invites feature a philosophical quote from Nelson Mandela, the late anti-apartheid leader and South African president.

Image:Queen Elizabeth and Nelson Mandela at Buckingham Palace in 2003

Monogrammed with the couple's initials in a gold leaf, the quote reads: "What counts in life is not the mere fact that we have lived. It is what difference we have made to the lives of others that will determine the significance of the life we lead."

Mr Mandela, who died in 1999, was on first name terms with the Queen, who he met on several occasions.

The dress

Image:Once seen, never forgotten...

Eugenie's most famous fashion moment remains an electric blue fascinator worn to Prince William and Kate's wedding in 2011, but the ill-advised headwear should soon be eclipsed by her choice of wedding dress.

While her choice of designer is top secret, Eugenie is known to be a huge fan of Canadian-born designer Erdem Moralioglu.

A lover of bold print, she wore a floral shift dress by the London-based designer for her official engagement photos.

Image:Beatrice has her eye on Eugenie's wrap-around Osman dress

Eugenie is also a fan of structured designs, wearing a chic wrap-over dress from London label Osman at this year's Royal Ascot.

The princess also successfully worked a Stella cape-dress for the Queen's 92nd birthday earlier this year, making an off-the-the shoulder dress and cape combo a possibility for the wedding.

Another label in the running is Gainsborough - set up by a former Vogue art director, Caroline Breteau, and Sam Dougal, formerly of Alexander McQueen. Eugenie wore a powder blue 1960s style dress from the London tailoring and couture label to Prince Harry and Meghan's wedding.

Image:Eugenie loves a bold fashion statement

Whoever she chooses, there is little doubt it will be a high-fashion designer, and knowing the princess' style, we are likely to see a bold eye-catching design on Eugenie's big day.

The royal parents

On the day of the engagement announcement, the Duchess of York posted a black and white photo of the happy couple on Twitter, with the caption "Total joy!!"

Image:The Duchess of York is a big fan of her future son-in-law

Wording on the photo read: "A total embrace of goodness and joy. We love Jack and I am so excited to have a son, a brother and a best friend. Eugenie is one of the finest people I know and so together it will be pure harmony."

Prince Andrew, who has said he is "absolutely overjoyed" about the pairing, has called Jack "an absolutely outstanding young man".

Royal guests

Eugenie is ninth in line to the throne, so the immediate royal family should all be there for her big day.

Image:The royal family watch Trooping the Colour from the Palace balcony

The Queen, Prince Charles and Camilla, Prince William and Kate, Prince Harry and Meghan, and Eugenie's father Prince Andrew, her mother the Duchess of York and her sister Princess Beatrice should all be there.

While Pippa Middleton and her husband James Matthews will no doubt be invited, with Pippa's first child due in October they may or may not make it to the wedding.

Jack's family

Jack's father George Brooksbank, 68, a chartered accountant and company director, and his mother Nicola, 64, will both be there for their first-born.

Image:Jack's family have aristocratic links

Jack's younger brother, Thomas, will also be in attendance, and possibly the best man.

Jack's grandmother on his mother's side, Joanna Newton, 91, who told the Sun her grandson was a "charming boy" but "not the most intelligent", is also expected to be in attendance, which should keep everyone on their toes.

Celebrities

Once celebrity-turned-royal who will definitely be there is Meghan, the Duchess of Sussex, with both Eugenie and Jack attending her royal wedding to Prince Harry earlier this year.

Image:The Duchess of Sussex will be there

X-Factor judges Robbie Williams and Ayda Field, who have been good friends of Eugenie and her sister Beatrice for years, are also dead certs, with their daughter Teddy taking on a key role in the ceremony.

Other famous faces we could see in the pews include model and actress Cressida Bonas, and actor Eddie Redmayne and his wife Hannah, who Eugenie used to hang out with while living in New York.

The Princess is also known to be friends with the grandsons of Nelson Mandela - Ndaba, 35, and Kweku Mandela, 33, so it is possible they could also come over to the UK for the wedding, especially as their late grandfather's poignant words feature on the wedding invite.

Members of the public

Like Prince Harry and Meghan before them, Eugenie and Jack will be inviting members of the public to their big day.

The Palace announced: "Princess Eugenie and Jack Brooksbank would like to invite members of the public to join their wedding on 12 October, 2018, to attend inside the Precincts of Windsor Castle.

"'1,200 members of the public will be able to view the arrival of the congregation and members of the royal family, listen to a live broadcast of the marriage service and watch the start of the procession as the couple depart at the end of the wedding ceremony."

People can apply to attend the festivities via an online public ballot, which will be chosen at random.

But you need to be quick to apply, the ballot closes on 8 August.

Charities, school children and staff

Also present in the Castle Grounds will be representatives of charities supported by Princess Eugenie and Jack Brooksbank, together with members of the Windsor community and children from the local schools which Eugenie attended.

Residents of Windsor Castle and a number of Royal Household staff will also be present.

Best man

While Jack's best man hasn't yet been confirmed, his younger brother Thomas Brooksbank is a strong contender for the role.

Image:Who will Jack choose for his best man?

One of Jack's best friend's, nightclub manager Guy Pelly, who initially introduced him to the Mahiki set, could also be in the running.

The bridesmaids

As is to be expected with such a well-connected bride, the bridesmaids and page boys will include the children of royals and well-known celebrities.

Image:Robbie Williams and Ayda Field are expected to attend

Hot-on-the-heels of her bridesmaid role at Prince Harry's wedding, Princess Charlotte, three, will be a flower girl.

Additional bridesmaids will include the daughter of popstar Robbie Williams and actress Ayda Field Theodora Rose (known as Teddy); Maud William's, who is the niece of presenter Claudia Winkleman and daughter of actress Sophie Winkleman and Lord Frederick Windsor; and Ines de Givenchy, the great niece of the late designer Hubert di Givenchy.

Eugenie told Vogue in their prestigious September issue that the recent surge in the anti-plastic movement had been "eye-opening".

She went on: "My whole house is anti-plastic now - and Jack and I want our wedding to be like that as well."

The reception

The reception is expected to take place at the Royal Lodge in Windsor.

Image:The Duke and Duchess of York are helping organise the reception

The Duke and Duchess of York are understood to be helping plan the reception, with the Duchess - who was overlooked for the evening receptions of Prince Harry and Meghan despite attending the day service - overseeing the guest list.

Guests will dance the night away inside a large marquee set up in the grounds, according to Vanity Fair.

The honeymoon

Known for her love of holidays, Eugenie is well-travelled.

Jack is also often jet-setting around the country as part of his professional remit as the European manager for Casamigos Tequila.

The pair even took an "early-moon" in Italy ahead of the wedding, exploring the Amalfi Coast together.

Eugenie's parents, Sarah and Andrew, honeymooned in the Azores Islands near Portugal, before enjoying a five-day sail in the Atlantic aboard the royal yacht Britannia.

Although the marriage didn't last, Eugenie is very close to both her parents, so could she follow in their honeymooning footsteps?

:: Nicaragua

The proposal took place in Nicaragua - a popular honeymoon destination - so it's also conceivable they could re-visit Central America for their first trip as a married couple.

Image:The couple got engaged by a lake overlooking a volcano

:: Seychelles

Prince William enjoyed his honeymoon with Kate on the secluded private North Island in the Indian Ocean off East Africa.

Image:Wish you were here?

So it's possible Eugenie take inspiration from her older cousin and soak up the sun, sand and wildlife of the Seychelles.

:: Switzerland

Image:A York family Swiss ski trip

Even a winter getaway is possible, with the Swiss ski resort of Verbier both a royal favourite and the place that Eugenie and Jack met seven years ago.

Royal titles

Following a royal wedding, it is custom for the Queen to bestow a new royal title on the couple as a wedding gift.

Image:Eugenie is expected to keep her royal title, but adopt Jack's name too

However, unlike Prince Harry and Meghan who became the Duke and Duchess of Sussex after their wedding, Eugenie and Jack will not get a new title.

Jack is rumoured to have opted to remain a Mr rather than an Earl. Eugenie is most likely to keep her royal title, but take his name too, becoming HRH Princess Eugenie, Mrs Jack Brooksbank.

Quite the mouthful.

What next?

Eugenie, who is not a working royal like her cousin Harry, is expected to continue in her role as gallery director at Hauser & Wirth in Mayfair.

Image:Princess Eugenie works in an art gallery

She will also continue as ambassador for several charities, including the Teenage Cancer Trust, environmental charity Project 0 and co-founder of the anti-slavery collective, an initiative to combat modern day slavery.

She is also an ambassador for The Royal National Orthopaedic Hospital, after the specialist unit treated her for scoliosis (curvature of the spine) aged just 12.