I was out in Glasgow a few weeks back, and the amount of women out and about on hen nights with glitter stetsons, fairy outfits, nurses outfits etc etc was unbelievable. They were all being left alone (ie men were scarpering!!!!). I don't think Glasgow folk would hassle women dressed up, they have a good sense of humour.
Honestly, I would say, if you want to dress as a Lollipop girl or whatever, go ahead.
And scg, don't you live in Bearsden???? Not exactly neds-ville!