On 4 July 1999, David and Victoria Beckham celebrated their marriage in what was one of the most show-stopping ceremonies of the decade, complete with personalised thrones, coordinating outfits and a then super-sweet baby Brooklyn.
Moving forward 18 years, the couple have welcomed another three children into the world - Romeo, 14, Cruz, 12 and five-year-old Harper.
As ever, the happy family celebrated the special occassion in style, and captured snippets of the day - including their gifts, across social media. Take a look...
The happy couple started their anniversary celebrations early, complete with a atmospheric bonfire. Captioning the moment on Instagram stories, Victoria wrote: "18 years married!! Almost!"
David sported "bunny ears" in a fun photo taken during the couple's early anniversary celebrations - and he looked very amused indeed! "Love u" Victoria captioned the image.
On the morning of the Beckham's 18th anniversary, they came downstairs to a celebratory breakfast made by their four children, Brooklyn, Romeo, Cruz and Harper. The table was decorated with flowers and a colourful selection of balloons - aww!
The doting parents were also given a beautiful bouquet of flowers from their four children to mark their anniversary.
David treated Victoria to a hamper of Sassicaia wine to mark 18 years of marriage - which she seemed to like a lot. Captioning a picture of the gift on Instagram, she wrote: "He knows me too well!!! x VB."
To mark 18 years her wedding anniversary, Victoria Beckham posted a sweet photo of her and David on their big day back in 1999, with a tiny Brooklyn asleep in his dad's arms. Captioning the photo, the fashion designer simply wrote: "I love you Kisses x."
Meanwhile, over on son Romeo's account, the same photo was shared alongside a touching tribute. "Happy anniversary to the best parents in the wold !! love u so much," he wrote.
Cruz Beckham made sure to mark his mum and dad's special day on Instagram, sharing a heartfelt message beside a photo of them exchanging their vows.
"Dream mum and dad I can't believe it has been 18 years so happy anniversary @davidbeckham and @victoriabeckham I love you so much and I want you to know that you are the best parents in the whole wide world I love you," he wrote.
Possibly mirroring their wedding photo - in which David is holding a young Brooklyn, the couple posed with a baby doll in a sweet black-and-white photo posted by their eldest son. Marking their special day, the 18-year-old photographer wrote beside it: "Happy anniversary to 2 of the most amazing people in my life x love you mum and dad."
In the evening, the loved up couple enjoyed a date night at a restaurant. Sharing the image on Instagram stories, Victoria wrote: "Special night!! I love you @davidbeckham."