Largest gathering of people wearing vests/singlets/tank tops

Largest gathering of people wearing vests/singlets/tank tops
Who
Deniliquin Ute Muster
What
3500 people
Where
Australia (Deniliquin,Bull Ride Arena)
When
The largest gathering of people wearing singlets was 3,500 people gathered in the Bull Ride Arena during the annual Deniliquin Ute Muster in Deniliquin, NSW, Australia, on 2 October 2010. The participants were wearing blue singlets, known across Australia as ‘Blueys’, traditionally worn by shearers.