- Who
- Richland Elementary school
- What
- 1,223 people
- Where
- United States (Johnstown)
- When
The most people wearing Cat in the Hat hats is 1,223, and was achieved by Richland Elementary school (USA) in Johnstown, Pennsylvania, USA, on 9 March 2015.
The attempt took place in honor of Dr. Suess 110th birthday.
