Hilary Duff makes a surprise appearance at Madison Square Garden as part of her New York run, performing at her first of two shows at the venue. Multiple outlets report that she brings ex-partner Joel Madden on stage during a set with Good Charlotte, and they perform the song “The Anthem” together. Coverage also highlights that the moment draws significant attention from the audience, with the collaboration presented as one of the show’s standout events.

In addition to the on-stage reunion, sources say Duff also shares details from the day surrounding the MSG debut, including that her daughter is taken to an emergency room earlier that morning. The combined reporting portrays a single event day that includes both the high-profile performance at MSG and the family emergency, without adding further details about the medical situation.

Overall, the accounts converge on three main points: the MSG show occurs as Duff begins her two-night engagement, she performs “The Anthem” with Joel Madden and Good Charlotte, and she reveals her daughter was in the emergency room that morning.