stef, I really don't know, & this is so tenuous as to be almost embarrassing - if 'little pyjamas' are 'PJ(s)', and you add that 2004's Miss World came from Peru, and you 'swap' the 'P' & 'J', you could conceivably come up with - Jeru-salem (?????)
I'm sure that an AB'er that actually has the quiz will give you a better answer - or a better definition - lol !