Wedding festivities for global superstar Taylor Swift and NFL player Travis Kelce are reportedly underway at New York City's Madison Square Garden, sources told ABC News.

The initial event was scheduled to commence Thursday evening, with reports indicating a Chevrolet Suburban believed to be transporting Swift arriving at the venue. This first celebration is expected to host approximately 100 guests.

Details surrounding the event have been closely guarded. However, in a significant philanthropic gesture, Swift and Kelce jointly donated $26 million to various charities, a representative for Swift confirmed to ABC News. Among the recipients, City Harvest, a New York City-based food rescue organization, announced a $1 million donation, which its CEO described as "a love letter to New York."

Further events are planned for Friday at the arena, including a cocktail hour starting around 4 p.m. This second gathering anticipates a larger attendance of about 1,000 people, with festivities expected to continue until early Saturday morning. Both events are reportedly operating under a strict no-phone policy for all attendees, staff, and vendors.

To accommodate the celebrations, portions of West 31st Street and West 33rd Street near Madison Square Garden have been closed to both vehicles and pedestrians, according to permits obtained by an event company. The New York Police Department has announced multiple street closures in the vicinity, which may also affect access to Moynihan Train Hall and Penn Station.

Sources familiar with the arrangements stated that tents and canopies will be erected around the venue's entrances and exits to obscure views of arriving and departing guests, limiting public visibility.

Preparations at the arena have been visible in the days leading up to the events, with trucks seen outside and workers seen loading equipment. Boxes labeled "Garden Party" were noted, and a red carpet was reportedly rolled out.

Representatives for Swift and Kelce have not yet provided official comment on the events or the charitable donations.