To be honest, I was larger than all of them, so I'm not sure they named the event correctly, but then again, I'm not female.
There were a lot of them - a world record number in fact. Here's what 1,549 female biker steeds look like - quite impressive:
(right click -> open as image)
I was manning an IAM stand, and there was a fair bit of interest, which was good.
And just for fun a Police Livewire, as ridden by a female cop:
Note the siren mounted below the motor (by the footpeg).
Only one disadvantage - they have to catch you within 90 miles, or you're off the hook...