The newlyweds shared laughter and a kiss in front of the Royal Family and 850 guests.
Among them were dozens of A-list celebrities such as singer Robbie Williams, models Cara Delevingne and Naomi Campbell, and actor Demi Moore.
The wedding at St. George’s Chapel in Windsor Castle came five months after the bride’s cousin Prince Harry married Meghan Markle in the same venue.
The 28 year old princess, who is ninth in line to the throne, beamed as she arrived at the chapel in a dress designed by Peter Pilotto and Christopher De Vos.
Mr Brooksbank, 32, a drinks executive who was previously manager of the Mayfair nightclub Mahiki, has been the princess’s boyfriend since they met in the Swiss ski resort of Verbier nearly eight years ago.
Most senior royals were there to support the couple including The Queen and the bride’s uncle, The Prince of Wales, as well as the Duke and Duchess of Cambridge, and the Duke and Duchess of Sussex.
The Duchess of Cambridge arrived with the duke wearing a dress by Alexander McQueen and a Philip Treacy hat, while the Duchess of Sussex was dressed in a navy dress and coat by Givenchy and a hat by Noel Stewart.
A heavily pregnant Pippa Middleton arrived with her husband James Matthews.
The Duke of Edinburgh, 97, was able to attend the ceremony but the Duchess of Cornwall decided to honour a prior commitment in Scotland.
Once the ceremonial trumpets were silenced and the rings exchanged, the married couple followed the example of the Duke and Duchess of Sussex and rode through the streets of Windsor in a carriage – although not for as long as the procession in May.
The princess was driven with her father Prince Andrew in the same 1977 Rolls Royce Phantom VI used to transport Kate Middleton to her wedding to Prince William at Westminster Abbey in 2011.
After the wedding the happy couple enjoyed an afternoon reception inside Windsor Castle’s St George’s Hall organised by the Queen.
The bride’s father then waited by the door of Windsor Castle as they started their married life together.
He held her train as she climbed into a rare DB10 Aston Martin made for the James Bond movie Spectre.
Thousands of wellwishers and royal enthusiasts lined the route of the carriage procession through Windsor High Street but the crowds were on a far smaller scale than for the wedding of the 33 year old prince and his American bride.
Eugenie’s divorced parents The Duke of York and Sarah, Duchess of York played a large role in the proceedings – the 17th royal wedding at Windsor Castle – with Andrew walking his youngest daughter down the aisle.
A friend said Sarah was feeling “a little nervous” about her daughter’s big day and being reunited with her former in-laws 22 years after her marriage ended.
The nuptials were being followed by a post-wedding lunch hosted by the Queen and a black-tie reception this evening at Royal Lodge, the mansion in Windsor Great Park belonging to Prince Andrew.
Tomorrow there will be a festival and funfair themed “day two” party with dodgems and funfair rids, also at Royal Lodge, and reportedly organised by the Beckhams’ wedding party planner, Peregrine Armstrong-Jones.
The wedding has attracted controversy because of the estimated £2 million bill for policing and security. More than 46,000 people have signed a petition calling on the Royal family to pick up the cost rather than the taxpayer.
But in an interview with ITV’s Eamonn Holmes and Ruth Lansgsford Prince Andrew said he had not been closely involved in the planning as “all the approval goes through the Queen anyway.”
He added: “It was what I was told as to where it was going to take place.
“The Queen very firmly said, ‘No, St George’s is where you are going to have the wedding. So I said, ‘Aye, aye ma’am turn to the right, salute and carry on.”’
He also played down comparisons with Prince Harry’s wedding, saying: “It will not be the same as the wedding in May, that was a public wedding, this is a family wedding. Eugenie and Jack have so many friends, they need a venue big enough to fit them all in”.
Windsor residents, charity representatives, and school children are among the 1,200 members of the public invited to gather in the historic grounds of Windsor Castle.
Local wedding photographer Ajie Williams-Jones, from Bray, was among members of the public within the castle grounds.
He said: “There was 20,000 here the day before the last wedding. It’s a lot quieter here today. I think everyone seems happy though. Good spirits.”
Asked about the cost to the taxpayer, Mr Williams-Jones said: “People will moan regardless. It’s part of our heritage and our history.”
Dinner lady Jacquie Rosser was also in position early inside the castle grounds, hoping to catch a glimpse of pop star Robbie Williams.
The 46-year-old travelled from London with her daughter Poppy, 12, and 67-year-old mother Elizabeth Hayvall, from Sevenoaks in Kent.
Ms Rosser said there was a “lovely buzz about the place” following their overnight stay in Windsor.
Poppy, who said she was granted a day off school provided she agreed to tell the headmistress all about her day, told of her excitement at the ringside seat for the second royal wedding of the year.
“It’s amazing to come from watching it (the Duke and Duchess of Sussex’s wedding) on the TV to actually being here and seeing what it’s like,” said the schoolgirl.
The wedding was broadcast by ITV with live coverage shown on an extended This Morning special, This Morning at the Royal Wedding between, 9.25am and 12.30pm with husband and wife presenters Eamonn Holmes and Ruth Langsford live from Windsor. The BBC decided not to broadcast it.
Eugenie was supported by her Maid of Honour, her 30 year old sister Princess Beatrice while the groom’s brother, Thomas, was his best man,
Bridesmaids included three-year-old Prince Charlotte, daughter of the Duke and Duchess of Cambridge, Savannah Philips, 7, daughter of Autumn Phillips and Peter Phillips; her sister Isla, 6, Mia Tindall, 4, daughter of Zara Tindall and husband Mike; Maud Windsor, 5, Eugenie’s goddaughter and the daughter daughter of Lady Frederick Windsor and Lord Frederick Windsor, and Theodora Williams, 6, singer Robbie William’s daughter with his wife Ayda Field.
Future King, Prince George, 5, was a page boy along with Louis de Givenchy, 6, son of Zoe and Olivier De Givenchy. Special Attendants included Lady Louise Mountbatten-Windsor, 14 and Viscount Severn, 10.
The wedding Service was conducted by The Archbishop of York John Sentamu, who wrote a personal prayer for the Wedding Service.
The Dean of Windsor David Conner gave the Address at the Wedding and also officiated as the couple made their marriage vows.
James Vivian, director of music St George’s Chapel, wrote descants for two hymns that were sung during the Service. and musicians from the Royal Philharmonic Orchestra performed during the ceremony.
Music also included a performance of Bach’s Ave Maria by the Italian singer Andrea Bocelli.
Ahead of the service the couple worked together with the RPO’s managing director, James Williams, to choose the accompaniment to the service. The Duke of York is Patron of the RPO.
James Williams said: “It has been a great pleasure to work with Princess Eugenie and Mr Jack Brooksbank to plan the music for their special day and we wish the couple much happiness for their future together.”
The internationally renowned singer-songwriter Andrea Bocelli performed two pieces during the Service too.
As the Queen is head of the armed forces, there was military involvement in the wedding too.
State Trumpeters from the Band of the Household Cavalry performed a fanfare during the Service, written especially for the occasion by the Commanding Officer of the Bands of the Household Division, Lieutenant Colonel Darren Wolfendale.
Members of Nijmegen Company Grenadier Guards, of which The Duke of York is Colonel, lined the West Steps of St George’s Chapel as the couple depart after the Wedding ceremony.
Pipers from the 2nd Battalion the Royal Regiment of Scotland performed Scottish pieces from the Garter Tower as the Bride and Groom departed in the Carriage Procession.
The Household Division’s involvement in the Wedding also reflects Mr Brooksbank’s family history, as his great Grandfather, Sir Jack Coke, was an officer in the Scots Guards.
Cake designer Sophie Cabot made a wedding cake of red velvet and chocolate cake will be a traditional cake, with a modern feel.
It incorporated the rich colours of autumn in its design and will be covered with detailed sugar work including ivy.