I refuse Schoolgirl requests as I find age play stuff really gross, but I do get asked for secretary quite frequently. I just wear a dress I bought for my civvy job but ended up never wearing as it was too revealing!
most of the time when I do get asked, it's about leather or gym clothes. o_x
I get asked for leather and pvc a lot too, which I don't mind as I've got a bit of a fetish myself for those materials and enjoy wearing the dresses, skirts and boots, love the smell of real leather...However, I bought a pvc catsuit several years ago and have started to dread clients asking me to wear it as its skin tight and really difficult to move, get in and out of and gets really hot in it. The last time I had it on the client asked me to stand facing the wall, he then unzipped it at the crotch really fast and nipped my vagina The final straw came today when someone asked for a 15 minute quickie and can I wear the catsuit!!! I said no in fact I'm thinking of getting rid of it altogether now.
Weirdest and most fun I had though was a chap brought me a zippy costume, looks like a onesie with the full head attached where my eyes peep through the mouth. Was hilarious giving a lap dance and be in it.