Petticoats are back in fashion even if it's just to show some lace beneath the hem of your skirts. Actually petticoats or slips as some prefer to call them, are quite effective undergarments worn under skirts when you're wearing tights to avoid the skirt from riding up your thighs in that so very annoying way. Effective as body warmers and as part of the layering that helps counter-act a chill wind. As a child we were made to wear petticoats or half-slips to avoid that sheer see-through effect on some clothing - it was a no-no to have your thighs seen through your dress when you stood against the light. In short, it was all about modesty. It was even considered impolite to walk around with the frills of your petticoat showing below the edge of your skirt. Now we know it's a go-getting device most women used to get men to go all a-gog. And so to these days, when that extra frill and sheer lace is reminiscent of burlesque and yes..... getting some men to go all a-gog too!