Princess Eugenie should opt for an elegant and simple wedding dress to create a memorable royal look, rather than going for over-the-top drama, a bridal expert has suggested.

Peta Hunt, editor-at-large at You & Your Wedding magazine, said fresh, clean lines would suit the Queen’s granddaughter when she weds Jack Brooksbank in Windsor on October 12.

Ms Hunt said designers such as Emilia Wickstead or Suzanne Neville, who are in tune with the shape of a British woman, would be perfect for the royal bride.

“I think she needs to keep it as simple as possible – maybe a cross between Grace Kelly and Meghan – so some kind of updated classic,” she said.

Prince Ranier 111 and his bride, Princess Grace
Grace Kelly and Prince Rainier of Monaco on their wedding day in 1956 (PA)

Actress Grace Kelly’s wedding dress in 1956 featured high-necked and long-sleeved lace detail.

Meghan Markle, now the Duchess of Sussex, wore a simple, elegant, pure white, boat-necked gown by Clare Waight Keller for Givenchy when she married Prince Harry in May.

Royal wedding
The Duchess of Sussex, formerly Meghan Markle, in a Givenchy dress, leaves St George’s Chapel with the Duke of Sussex (Jane Barlow/PA)

Ms Hunt added: “I hope Eugenie’s not going for something over the top. I think there needs to be a certain amount of decorum so maybe she’ll go for a really long train.

“She’s in a very difficult position. She’s not full on in the public eye like previous royal weddings – Meghan and Kate’s.

“But she does need to make a nod to fashion because we’re looking to the royal family in a historical way now to produce iconic looks for the next few years.”

Eugenie has already revealed that a British-based designer is behind her gown, and that she was set on the style she wanted from the start.

“(The dress) is the one thing that I was really decisive about,” the princess told British Vogue magazine.

“As soon as we announced the wedding, I knew the designer, and the look, straight away. I never thought I’d be the one who knew exactly what I like, but I’ve been pretty on top of it.”

She hinted at her ideas in an interview with BBC’s The One Show on the day her engagement was announced, and said that 1980s style meringue shoulders were off the table.

Princess Eugenie and Jack Brooksbank engaged
Jack Brooksbank and Princess Eugenie on the day their engagement was announced (Jonathan Brady/PA)

Asked whether she would wear a straight gown or a meringue, Eugenie replied: “Maybe a mix of both. Can you do that? Is there such a thing?

“No meringue shoulders – that’s a little bit out of fashion – maybe it’s in fashion now? We’ll see what happens.”

Ms Hunt suggested Eugenie might opt for a big-skirted gown with a touch of lace and perhaps with an on-trend pocket.

“Hopefully she’ll go for someone like Emilia Wickstead, or even Suzanne Neville – someone that understands the British woman’s shape because we’re not all stick insects,” she said.

“Lace will be soft and flattering and it can also be structured, it doesn’t have to be fly-away and boho.”

The practicalities of a royal wedding will also be a consideration.

Ms Hunt added: “With a big occasion like this, with the world’s press looking at you, she needs to keep it as elegant and simple as possible.

“She’s got a long way to walk – that aisle is long – she doesn’t want to be bothered with worrying about trains dropping off or whether Prince Philip can see bits.

“She needs to keep it clean with fresh lines so it brings out the best in her.

“Clean, fresh and elegant would be a dream.”

Erdem – often a favourite of Eugenie’s – has been suggested as one of the front-runners for the wedding gown.

The princess wore a floral, cap-sleeve dress by the designer for her engagement photo shoot at Buckingham Palace.

Princess Eugenie and Jack Brooksbank engaged
Princess Eugenie, wearing Erdem, and Jack Brooksbank in the Picture Gallery at Buckingham Palace (Jonathan Brady/PA)

Erdem was founded by Erdem Moralioglu in 2005, and he is known for his sweeping dresses and floral prints.

The Canadian-born, London-based designer counts the Duchess of Cambridge, former US first lady Michelle Obama, style doyenne Alexa Chung and actress Keira Knightley among his celebrity clients.

Royal visit to Scandinavia – Day Two
Kate wearing Erdem to a reception in Stockholm, Sweden (Dominic Lipinski/PA)

Ralph & Russo, who designed the gown for Meghan’s official engagement photos, could also be a contender, as might Stewart Parvin, who made Zara Tindall’s wedding dress.

Zara Phillips and Mike Tindall wedding
Zara Tindall in Stewart Parvin on her wedding day in 2011 (Stuart Wallace/Sunday Times/PA)

Ms Hunt said: “The Queen loves Stewart Parvin and maybe a safe pair of hands would be a good thing for Eugenie.”