Well, obviously I haven't! The trouble is, it's very hard to find trousers that do fit properly. Generally speaking, trousers that will fit even passably around the thighs/butt will be loose at the waist, so after I exhaust my shopping motivation I end up with a compromise that I can get into but I know isn't a perfect fit by any means. The current slim-fit fashion certainly doesn't help.

Dress pants have been my best bet, but the brands and models I've found to fit tend to come in a very limited range of fabrics - black all around!