Taylor Swift and Travis Kelce are gearing up for day two of their wedding celebration at Madison Square Garden, and the extravagant event is expected to see roughly 1,000 of their famous friends come together to commemorate their love.Hollywood royalty, sports stars, actors and singers have all descended upon New York City for the star-studded event.But it appears there may be some tension during the dazzling celebration, as a ton of celebrity exes will be forced to reunite.Between Jack Antonoff and Lena Dunham, Suki Waterhouse and Bradley Cooper and Ed Sheeran and Ellie Goulding, there could be some very awkward run-ins at the wedding celebration.Swift's longtime music collaborator Antonoff and her close friend Dunham were both spotted arriving separately at Madison Square Garden on the first day of Swift's wedding parties, so it's safe to assume they'll be at the party this evening.The two dated for five years from 2012 to 2018, and Dunham later confessed to cheating on the producer in her memoir Famesick.Waterhouse and Cooper are both confirmed to be attending the wedding celebration; they were together from 2013 to 2015.Cooper has since moved on with Gigi Hadid, one of Swift's oldest friends, which is how he scored an invite to the coveted event. Taylor Swift and Travis Kelce are gearing up for their wedding celebration today at Madison Square Garden, and the extravagant event is expected to see roughly 1,000 of their famous friends come together to commemorate their love It appears there may be some tension during the dazzling celebration, as a ton of celebrity exes will be forced to reunite But it appears there may be some tension during the dazzling celebration, as a ton of celebrity exes will be forced to reunite, including Jack Antonoff and Lena Dunham, who dated for five years from 2012 to 2018 (seen together in 2014)