Which museum received the puffy shirt prop from Seinfeld in 2004?

The National Museum of American History received Seinfeld's puffy shirt prop in 2004.

Jerry Seinfeld donated the famous shirt to the Smithsonian's National Museum of American History on November 18, 2004. The museum also received an original script from “The Puffy Shirt,” the 1993 episode in which Jerry accidentally agrees to wear the frilly garment during a Today Show appearance.

The prop became part of the museum's effort to preserve objects representing American popular culture and television comedy. Curators chose the shirt after deciding that other possible Seinfeld artifacts, including Jerry's refrigerator, would be impractical to display. The shirt captured the show's visual identity and its influence on everyday language and humor.

The episode first aired on September 23, 1993, and was written by co-creator Larry David. The museum catalog identifies the object as accession number 2004.0245.01. It has not always been on public display, so references to seeing it in the museum may describe an earlier exhibition rather than its current location.