The bride-to-be! Princess Diana's niece Lady Kitty Spencer, 30, stuns in a polka dot gown in Florence after sparking rumours she's marrying fashion tycoon fiancé Michael Lewis, 61, this weekend

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Lady Kitty Spencer has showcased her fashion prowess once again during an evening in Florence, after stunning in a polka dot gown.

Princess Diana's niece, 30, took to Instagram today to share a gorgeous snap of herself sitting in the Piazza del Duomo, while sporting a glamorous black and white frock.

It's thought the image was taken yesterday during her supposed Hen Do celebrations after the model's friends sparked rumours she is set to marry her banking beau this weekend in Italy. 

Pals of Lady Kitty shared excited social media posts tagged Team Bride, hinting that her nuptials to South Africa-born multi-millionaire, Michael Lewis, 62, may be imminent.

On Thursday, Dutch fashion model Marpessa Hennink posted a selfie with Lady Kitty with the words: 'Team Bride. It's happening finally.' 

According to Italian local media, it’s believed Lady Kitty will wed her partner, who is five years older than her father Charles Spencer, at Villa Aldobrandini in Frascati, this weekend.

Lady Kitty Spencer has showcased her fashion prowess once again during an evening in Florence, after stunning in a polka dot gown (pictured)

Pals of Lady Kitty shared excited social media posts tagged Team Bride, hinting that her nuptials to South Africa-born multi-millionaire, Michael Lewis (pictured together), 62, may be imminent

Lady Kitty's siblings Lady Eliza and Amelia, 28, have both remained silent on social media in recent days, while her father Charles shared a video of his home Althorp House yesterday morning.

It is unlikely Lady Kitty's cousins Prince William, 39, or Prince Harry, 36, would attend the event in Italy amid the ongoing Covid-19 crisis in the UK and the US. 

Wedding guests are thought to be staying at the five-star Hotel de la Ville in Rome, and include Viscountess Emma Weymouth, singer Pixie Lott and artist Piotr Krzymowski. 

Photographer German Larkin shared the sweet straw bag that was left for guests upon their arrival at the hotel, featuring Italian flag colours on the straps and the word 'baci' embroidered across it, which in Italian means 'kisses'. 

The bag was packed with an assortment of gifts from the soon-to-be married couple.

The model has spent the last week in Italy with friends, with several going on to share posts that hinted that her nuptials may be imminent (pictured left, one shared a post captioned: 'Team Bride', and right, Mark Francis tagged Kitty in Rome, writing: 'So it begins...'

On Friday, guests enjoyed a dinner that took place at the Galleria Del Cardinale, a lavish baroque events space in the city.

Sharing the menu on their social media accounts, the meals included a classic veal and tuna salad, beef broth and pumpkin cream ravioli, baked eggplant, and a selection of sweet treats. 

Made in Chelsea star Mark Francis Vandelli also uploaded a coy post from Rome simply saying: 'And so it begins @kitty.spencer'. 

Earlier this week, Kitty shared a photograph posing in a leopard print bodycon dress as she posed for a snap on a bridge during a girl's weekend in Florence

Another friend, Simon Huck, posted a snap as he enjoyed a drink on the street in the city, writing: 'And so it begins.'

While Kitty's friends appear unable to contain their excitement about the wedding on social media, her family have remained remarkably more tight-lipped.

Lady Kitty's sister Lady Amelia and Eliza haven't shared posts for several weeks, while her father Charles Spencer posted a video of the grounds of his home Althorp House yesterday morning.  

Earlier this week, Kitty shared a photograph posing in a leopard print bodycon dress as she posed for a snap on a bridge during a girl's weekend in Florence.

Several comments appeared to hint at the upcoming big event, with one writing: 'Yeah, can't wait to see you!' Meanwhile artist Piotr Kamil Kryzmowski writing: 'Can't wait!' 

Several comments appeared to hint at the upcoming big event, with some saying they were 'so excited' 

Previously speaking to the summer issue of Town & Country, the model cousin of Princes William and Harry said:  'It's not that I don't place an importance on love. It's because, for me, love is the most important thing in the world, and I will protect it with all my heart by not making it a topic of discussion. 

'You open yourself up to other people having opinions, and it just isn't relevant to anybody's life but mine and my family's.

Despite staying tight-lipped on her beau, Kitty added: 'I just look forward to a really happy home life: a happy marriage and happy children. And I feel very at peace that things play out the way they should.'

Kitty's fiancé Michael has three adult children and was previously married to a woman named Leola in 1985. 

It's not yet known whether Lady Kitty will convert to Judaism, Mr Lewis' faith, before the big day. 

In August 2019, Lady Kitty was seen kissing Lewis after leaving Club 55 in St Tropez. 

In June, she was pictured showing off a large diamond ring on her engagement finger at London's Cash & Rocket Masquerade Ball. 

Just like Diana, the London-born daughter of Diana'a brother Charles Spencer and Victoria Aitken, grew up in the Spencer family seat Althorp in Northamptonshire.    

While Kitty is often spotted looking glamorous in the public, her brother Louis, 27, who is set to inherit their father's title, keeps a lower profile.  

'Primogeniture can be a tricky topic, because as times are changing, attitudes are as well. We've grown up understanding that it's Louis to inherit, and Louis will do an incredible job,' Kitty added.

The Spencer siblings - including twin sisters Eliza and Amelia, 28. - all tuned heads when they attended the royal wedding of Prince Harry and Meghan Markle in 2018. (L-R): Eliza, Louis, their mother Victoria, and Kitty

Speaking of her childhood, she went on: 'We have such an emotional attachment to Althorp. That's where we would have our Easter-egg hunts and our Christmases; I have my little vegetable patch, I learnt to ride a horse there, I learnt to ride a bike and to rollerblade. 

'It's so lovely to look back on the history and think everybody else probably learnt to ride a horse there, too.'

The Spencer siblings - including twin sisters Eliza and Amelia -  all turned heads when they attended the royal wedding of Prince Harry and Meghan Markle  in 2018.       

Overnight, Kitty's Instagram following leapt from 37,000 to a staggering half a million.

'I woke up the next day and looked at my phone and thought, 'Whoops, did I take someone else's by mistake?'. It was very weird, and a little bit overwhelming.' 

Speaking about her relationship with her siblings, Eliza and Amelia, she added:  'We are a bit of a tripod. It's been horrible to be separated this year. 

'They are in South Africa, which is only an hour ahead, and with two flights going there a day, you usually have the comforting thought of, 'I could always be there in the morning if I needed to be.'

Princess Diana's niece jetted off to the French Riviera earlier last summer. Pictured, in Nemi in a £1,750 D&G dress

'It's been awful to be completely shut off, and thinking, come what may, we can't be there for each other...'

Despite usually living a jet-set lifestyle, Kitty has travelled much less this year due to the Covid-19 pandemic. 

Last summer, Kitty shared an insight into her very luxurious trip to the French Riveriea and Italy's Amalfi Coast and Capri, showing off delicious meals and idyllic beaches on her Instagram page. 

 Kitty has had a global outlook from a young age, growing up between Althorp and Cape Town, South Africa.

As well as studying at the University of Cape Town, she later studied art history and Italian in Florence,  

On being a student in Italy, she added: 'Everything felt so simple and carefree, but you're still being stimulated in a culturally rich environment. 

'It's just pure pleasure and learning, and being surrounded by every type of beauty. If I'm lucky enough to live to the age of retirement, Florence is where you'll find me.'