The thing is, it has permanent upkeep. To get that super defined waist/hip ratio.. you have to wasp for at least a year or two.. and by then, you dont have any ab and back muscles left and without those you're in line for a bad back breaking accident.
There is a whole subculture around corseting and wasping. I did some research once because I wasnt sure whether I was enraptured or totally creeped out.. hell, I still done. hehe.