The ten-year age gap has drawn attention — and protests from some of his devoted fans — as Harry Styles's new love Olivia Wilde is 36 to his 26.
However, that's far from the only gulf between Hollywood's hottest new couple.
The One Direction star turned solo artist and actor met actress and director Olivia Wilde on the set of the forthcoming film Don't Worry Darling.
The One Direction star turned solo artist and actor met actress and director Olivia Wilde on the set of the forthcoming film Don't Worry DarlingInsurance Loans Mortgage Attorney Credit Lawyer
Olivia has been married once — for eight years — and was also engaged to actor Jason Sudeikis, with whom she has two children, Otis, six, and Daisy, four.
By contrast, many of Harry's romances — like the ones with pop star Taylor Swift and the late TV presenter Caroline Flack — have been relatively brief.
And, while Harry, who was brought up above a pub, left school in 2010 directly after his GCSEs, his new girlfriend is the descendant of several illustrious and interconnected English literary dynasties.
Olivia's childhood was characterised by dinner parties at the family home in Washington DC attended by the likes of Mick Jagger, author Salman Rushdie and film-maker Stephen Spielberg.
Her British father works there as a journalist. The late writer Christopher Hitchens was her babysitter.
Her relations include Brideshead Revisited author Evelyn Waugh, the novelist Emma Tennant — half-sister of Colin Tennant, who was later Lord Glenconner — and a controversial Anglican bishop. The BBC's former economics editor Stephanie Flanders is her cousin.
Olivia was also once married to an Italian prince, and through him is linked by marriage to the doomed Getty dynasty, as well as to the late actress Elizabeth Taylor.
Harry's family are a shade more ordinary. He is the son of Des, who lives near Manchester and has worked in sales and marketing, and Anne, who ran a pub with her second husband and now does charity work.
Before finding fame with The X Factor, Harry had ambitions to be a florist or physiotherapist.
It's fair to say that their early years experiences are poles apart.Insurance Loans Mortgage Attorney Credit Lawyer
Olivia has been married once — for eight years — and was also engaged to actor Jason Sudeikis, with whom she has two children, Otis, six, and Daisy, four
At the age when she was ticking off Mick Jagger for sitting in 'her' chair at the dinner table, Harry was singing karaoke at the Elms pub in Pickmere, Cheshire, and living above the Antrobus Arms in Northwich, run by his stepfather, John Cox.
He went to the local comprehensive in Holmes Chapel and had a Saturday job at the local bakery.
By contrast, Olivia attended a private boarding school in Massachusetts that educated former U.S. presidents George H.W. Bush and George W. Bush.
Despite their very different social circles, the relationship is already said to be 'very serious' and he has apparently met her children.
So what is the story of Olivia Wilde's intimidatingly successful family and what will they make of her charmingly ordinary pop star beau?The Daddy who is pals with Jagger
Olivia says: 'Mick [Jagger] is a friend of my parents and once came to the house when he was touring. He was sitting in what was usually my seat at the table. I came downstairs not caring who this person was and demanded that he vacate my seat'
Her father is the distinguished documentary maker, author and journalist Andrew Cockburn. Born in London but brought up in County Cork, Ireland, Andrew has lived in America since 1979 with wife Leslie, who produces the news show 60 Minutes.
Andrew is the Washington editor of Harper's magazine and has written for The New York Times and Vanity Fair. He co-produced the 1997 film The Peacemaker, starring George Clooney.
Olivia says: 'Because my parents were well-known journalists, our house in Washington DC was always full of artists, intellectuals and politicians.
'We had an extraordinary long table in our dining room that was always packed with people, and my mum would make salmon for them.
'Mick [Jagger] is a friend of my parents and once came to the house when he was touring. He was sitting in what was usually my seat at the table. I came downstairs not caring who this person was and demanded that he vacate my seat.
He just looked at me and said 'Go to bed' in a very sweet way. I knew from the way everyone reacted that there was something special about this guy.
'Everyone was laughing because I demanded that Mick Jagger leave the table.'
Olivia, whose childhood summers were spent in Ireland, idolises her father — but changed her surname to Wilde in honour of Oscar Wilde and the many writers in her family.
She says: 'It wasn't a rejection of my name, but I wanted to establish some independence from my family name and from their work. They are very political and pick battles with different people, some of whom are very prominent in the film world, and it was very muddy for me.
'You never know who will take things personally.'A brother in arms with Hemingway
Olivia's grandfather was the renowned radical British journalist Claud Cockburn.
The son of a British Consul General, Claud was an Oxford graduate, journalist on The Times and leading member of the Communist Party of Great Britain.
He wrote for the Daily Worker communist newspaper under an alias. He reported on the Spanish Civil War, and was heavily criticised as Stalinist and biased by George Orwell in his 1938 memoir Homage To Catalonia.
Olivia says: 'I didn't know my grandfather, Claud Cockburn, but he was an amazing journalist. He was friends with Graham Greene and fought in the Spanish Civil War with Ernest Hemingway. He died right before I was born, but it's bizarre — everyone had such a powerful relationship with him and he was such a huge influence on the family that I