After months of keeping details of the event under wraps, Swift's publicist Tree Paine confirmed the couple had tied the knot at Madison Square Garden.
Swift's brother Austin served as her 'man of honour', it was revealed, while Kelce's brother Jason was his best man.
The publicist described Sandler, the actor known for goofball roles in movies such as "Billy Madison" and "The Waterboy," as a friend of the couple.
Madison Square Garden also referenced the couple on social media platform X on Friday evening.
The post linked the couple's X accounts with the caption "it's a love story," a reference to Swift's 2008 song Love Story. It showed a message outside the Manhattan venue reading "JUST&T MARRIED."
The couple had previously not confirmed any wedding plans.
Another New York landmark also paid tribute to the bride - with the Empire state building lit up in blue.
Speculation regarding a potential July 4th weekend wedding intensified following significant security measures and logistics activity around Madison Square Garden.
The rumours were fuelled by high-profile celebrity sightings in New York City, including Hugh Grant, Bradley Cooper, and Ed Sheeran, alongside reports of extensive security fencing and street closures.
Throughout Friday evening, numerous vehicles with tinted windows arrived at the venue.
According to media reports, about 100 guests attended a dinner at Madison Square Garden the night before the wedding, while around 1,000 were invited to Friday's wedding celebration.
The White House could not resist trying to steal the focus from the event - posting a spoof image on X showing digital signs outside Madison Square Garden reading "Trump is your president".
Trump had previously criticised Swift after she endorsed his Democratic rival, former vice president Kamala Harris, in the 2024 presidential election.
The celebrations came during a busy weekend for New York, with events surrounding the US Independence Day holiday and the World Cup, while the city was also experiencing a heatwave. The crowds and high temperatures, however, did little to deter Swift fans, known as Swifties, from gathering outside the arena.
Swift, one of the world's best-selling recording artists, and Kelce, a three-time Super Bowl champion with the Kansas City Chiefs, have been together since 2023. They announced their engagement on Instagram last August.
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