Despite the costumes and characters, the league isn't pretending when it comes to the pillow-smacking. That reality factor is what attracted trained stunt fighter and pin-up model Katrina Randell, whose stage name is Sally Spitfire, to join.

"We beat the crap out of each other and we're giggling at the end," she says.

"It's total fighting, unscripted, unfixed."

No gentle whacks or laugh attacks are allowed in this league. Ducking, weaving, smacking and grabbing is all expected to be on the fight card.

"It's exactly what you think it is, but yet it's nothing like you think it is," says Sally. "It's not just a bunch of sexy girls in lingerie. Hunker down, get ready, you're going to get walloped."