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

The highly anticipated events are said to have commenced on Thursday, with a Chevrolet Suburban believed to be carrying Swift seen arriving at the venue. The initial gathering is expected to host approximately 100 guests.

Details surrounding the celebrations have been closely guarded. However, in a significant philanthropic gesture just hours before the festivities began, the couple 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 it received a $1 million donation, which its CEO described as "a love letter to New York."

The implications of these events extend beyond the celebrity sphere, highlighting the couple's substantial charitable impact. The scale of the festivities, coupled with the private nature of the proceedings, has generated considerable public interest and logistical planning, including extensive street closures around the venue.

Following Thursday's initial event, a second, larger gathering is scheduled for Friday. This event is expected to begin with a cocktail hour in the afternoon and continue until the early hours of Saturday morning, with an estimated 1,000 attendees. Both celebrations are reportedly operating under a strict no-phone policy for all individuals present, including guests and staff, to maintain privacy.

To manage the extensive security and privacy requirements, portions of West 31st and West 33rd Streets surrounding Madison Square Garden are expected to be closed to both vehicular and pedestrian traffic, according to permits obtained by an event company. The NYPD has also announced street closures around the arena, impacting traffic and access to nearby transportation hubs like Moynihan Train Hall and Penn Station.

Visual barriers, including tents and canopies, are reportedly being erected outside the venue to obscure the view of attendees entering and exiting. This week, workers have been observed outside the arena setting up equipment and rolling out a red carpet, with some boxes labeled "Garden Party," hinting at the elaborate nature of the preparations.

Representatives for Taylor Swift and Travis Kelce have not yet publicly commented on the wedding festivities or the details of the charitable donations.