IN NEW YORK City, celebrities have begun to flock to what is rumoured to be pop star Taylor Swift’s wedding to NFL player Travis Kelce at Madison Square Garden.

The 14-time Grammy winner’s nuptials have been kept tightly under wraps (neither she nor her partner have actually confirmed that their wedding is happening today), but there’s no ignoring the stream of A-listers flooding the city.

Among those photographed in formal attire in SUVs are our very own Graham Norton – whom Swift invited to the wedding while appearing on his BBC show last year – and Swift’s close friends Gigi Hadid, Lena Dunham, Cara Delevinge, Selena Gomez, among hundreds of others.

Hugh Grant, Ethan Hawke, and Jimmy Fallon have been spotted in suits heading into the venue.

Some 1,000 guests, reportedly banned from carrying phones and having signed non-disclosure agreements, are expected to attend the secretive wedding.

Frenzied reporting has included unidentified sources telling New York Post gossip column Page Six that the billionaire singer and three-time Super Bowl champion had already tied the knot in front of “a tiny group of loved ones.”

The Empire State building said it will have a ‘light blue sparkle’ to celebrate the wedding.

Fans have also decided to line the streets in wait.

Journalists on the ground have been documenting the line of black SUVs waiting to gain access to the cordoned off areas – some, reportedly, have chosen to ditch their rides and totter towards the venue.

The ‘wedding of the year’ is happening amid a record-breaking heat wave, a near-total news blackout and the sort of security lockdown more normally reserved for heads of state.

Guests are due to arrive between 3pm and 5pm local time (8pm and 10pm Irish time).

The main event is to begin at 5pm and go on until 4am on Saturday morning.

Rumour has it that Stevie Nicks and Tim McGraw, both close to Swift, will perform. British artists Ed Sheeran – another Swift pal – and Paul McCartney may also go on stage.

Guests will reportedly not be allowed to have their phones during the main ceremony.

Additional reporting by Mairead Maguire