Most people wearing Groucho Marx glasses
- Who
- City of Chicago's Outdoor Film Festival
- What
- 4436 people
- Where
- United States (Chicago, IL,)
- When
- 21 July 2009
The most people wearing Groucho Marx glasses was achieved by 4,436 participants in an event organised by the City of Chicago's Outdoor Film Festival in partnership with the Goodman Theatre in Chicago, Illinois, USA, on 21 July 2009.
The event started at 5:00 pm and finished at 8:33 pm