Princess Eugenie of York, along with her 30-year-old sister Beatrice, are by contrast unhappily famous for wearing peculiar hats, with the flamboyant numbers they picked for Prince William's wedding making a particularly lasting impression.
The 28-year-old princess Eugenie, is the ninth in the long line of succession. One public petition protesting the wedding's cost - the security bill is estimated at 2 million Pounds (USD 2.6 million) - dismissed her as a "minor royal".
The BBC, which takes its royal weddings seriously, reportedly caused a Buckingham Palace ruckus by refusing to broadcast this one live, fearing a ratings flop.
The public is focused instead on who is paying for what and there is resentment over taxpayers getting stuck with the security bill.
"A royal wedding is a private, personal event, dressed up as a national occasion," sniffed one protest petition signed by nearly 40,000 people.
The palace will pay for the red velvet and chocolate cake -- "traditional, (but) with a modern feel" -- and the post-ceremony brunch for 850 invited guests.
But just like the film star and her prince, Eugenie and Jack are also planning their own horse-drawn carriage parade around town, creating logistical challenges.
Petitioners want the 15-minute excursion scrapped, saving the expense of having to install rooftop snipers and jamming devices that disable drones.
The happy couple is not budging, causing "outrage", "fury" and other strong emotions in the British press.
Eugenie's own attempts to win over the nation's affections have not gone particularly well.
She and Beatrice gave a pre-wedding interview to British Vogue explaining the hardships of being princesses.
Posing in couture dresses with terriers on their laps at a Gothic royal lodge, Eugenie recalled how she once had "a wobble and started crying" over a "horrible" article about one of her sister's hats.
The princess then conceded: "There's no point being angry with anyone for beating us up - we just need to shine light and love in the world." The Guardian, a left-leaning paper with a stern view of the royals as a whole, concluded that the interview displayed "vanity, foolishness and lack of self-awareness", but ultimately would do little to dent the monarchy's gleaming image among royal fans.
The Telegraph, which caters to more traditional views, was gentler. "Who is Princess Eugenie?" it asked, seemingly reading its subscribers' minds, before quoting a family "insider" expressing wonder at the commotion over the security bill.
"It is a major royal event," the source insisted.
The groom mixes in London's glitzy social circles but is unknown to most outside the celebrity gossip world.
"He'll just hand me the tequila and say, 'Come on, mother-in-law, down it'," she told the BBC.
Press reports say Jack, 32, skipped university and became a waiter, working his way up to manage Mahiki, a posh London cocktail bar frequented by royalty.
The couple were introduced in 2010 by friends in a Swiss ski resort, where Jack was waiting tables.
Most recently, in 2016, he became a wholesale wine distributor.
"I'll need to take a few minutes for myself before the speeches," Jack told the Daily Mail, "because I'm terrified.
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