Taylor Swift and Travis Kelce are hosting a large wedding celebration with approximately 1,000 guests at Madison Square Garden in New York City. The event is drawing a significant number of Hollywood A-listers, athletes, actors, and musicians.

Amidst the festivities, the gathering is notable for the potential for awkward reunions between celebrity ex-couples. Among those expected to be present are Jack Antonoff and Lena Dunham, who dated for five years between 2012 and 2018. Dunham has previously spoken about infidelity during their relationship.

Suki Waterhouse and Bradley Cooper, who were together from 2013 to 2015, are confirmed attendees. Cooper is now in a relationship with Gigi Hadid, one of Swift's close friends and an expected guest. Bradley Cooper and Gigi Hadid Gigi Hadid might also encounter her ex, Zayn Malik, though his attendance is unconfirmed. Malik and Swift previously collaborated on the song "I Don't Wanna Live Forever."

Ed Sheeran and Ellie Goulding, who were rumored to have briefly dated in 2013 and were seen holding hands at the MTV Video Music Awards, are also anticipated to attend. Ed Sheeran and Ellie Goulding

Another notable pairing to potentially reunite is Shawn Mendes with exes Sabrina Carpenter and Camila Cabello. Mendes and Carpenter were seen together in early 2023, but Mendes was later photographed kissing Cabello. Fans have speculated that Carpenter's song "Taste" refers to this situation. While Mendes' attendance is unconfirmed, he has a long-standing friendship with Swift, having opened for her on tour and collaborated on a song. Camila Cabello and Shawn Mendes

Phoebe Bridgers, who collaborated with Swift on "Nothing New," may cross paths with her ex Paul Mescal. Mescal is currently dating Gracie Abrams, another friend of Swift's, making his presence likely. Phoebe Bridgers and Paul Mescal

Selena Gomez, confirmed to be attending, could potentially reunite with Taylor Lautner, whom she briefly dated in 2009. Swift and Lautner also dated briefly in 2009 before reconnecting as friends in 2023. Lautner has since appeared on Swift's Eras Tour and in her music video for "I Can See You." Selena Gomez and Taylor Lautner

Swift and Kelce reportedly held a rehearsal dinner with 100 close friends, including Hadid, Cooper, Gomez, Antonoff, and Dunham. While there are conflicting reports about whether Swift and Kelce have already married, the large celebration is scheduled to take place at Madison Square Garden.