Princess Eugenie's wedding will supposedly be the biggest event ever hosted at Windsor Castle

Princess Eugenie might be ninth in line for the throne, but she's about to hold a ceremony that could grab the number one spot in the history of royal weddings.

Vanity Fair reported on the cousin of Prince Harry who is set to marry fiancé Jack Brooksbank at St. George's Chapel in Windsor.

Brooksbank, an entrepreneur and former club manager is 32, while Eugenie is 28. The pair is to be wed on Friday, October 12.

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So far, the number of invitations have given us a hint of the enormity of the upcoming event. 850 invitations have been sent out, which is 250 more than Harry and Markle's list.

Like the May wedding, some celebrities will be present. The location is also the same. Plus, we're also set to witness another carriage procession, a lavish wedding reception, and a two-day wedding party.

Some A-listers we expect to see are Robbie Willians along with his wife Ayda Field, and possibly their daughter Theodora Rose as a bridesmaid.

Additionally, David and Victoria Beckham, George and Amal Clooney, Sir Elton John, and Ellie Goulding, who might possibly sing on the wedding night.

The invites were reportedly sent from the Duke of York and his ex-wife Sarah Ferguson, the Duchess of York. The R.S.V.P.s were directed to the Buckingham Palace.

A source told Vanity Fair that the wedding will contest all others which have taken place at Windsor. The seats may be turned to face the aisle to make space for more seats.

The source also said:

“The couple is hoping that not everyone who has been invited will accept, because there will be a space issue, and we might have to have some people standing.”

Another 1,200 persons will be chosen through a lottery to watch from the castle grounds.

From there they will see Eugenie and Jack as they leave the castle in an open-top carriage towards the St. George's Hall for the reception hosted by the Queen and the Duke of York.

The estimated cost of £2 million will be covered by taxpayers. It's actually less than the £45 million which was reported to have been spent in May.

Since Eugenie does not work as a royal, this has still caused some controversy.

A former royal-protection officer Ken Wharfe reflected the thoughts of many on the matter:

"Given their distance to the throne, I don’t see how they can justify a carriage procession. It’s a drain on the taxpayers’ pocket. A ceremony in the Queen’s chapel is fine, but it should end there. A procession is a step too far.”

But it was supposedly Prince Andrew, Eugenie's father's, idea to have the carriage tour. While Eugene herself didn't care much for it.

In fact, sources said that Andrew and Ferguson are the ones insisting on the grand affair.

“Andrew and Sarah have been very involved with the planning, and they both want this to be a full-scale royal wedding."

Meanwhile, Prince Philip, the Duke of Edinburgh will be in much closer proximity to Ferguson than he has for a while.

The two have a shaky past due to Ferguson's chaotic divorce way back in 1996. But the 97-year-old will show up for the sake of Eugenie who he is said to adore.

Will all the drama and extravagance that goes into their wedding, it remains to be seen how enjoyable the whole affair is.

For Harry and the Duchess of Sussex, there was laughter in the audience as the two said "I do" back in May.

A guest of the event, Gavankar, said the reason was simply due to the loud cheering outside from the 1,200 guests who were excited just to be present at the royal nuptials.