I'm TOTALLY with Ms Julie -- Jeans USED to be sized according to waist size and leg length when I was growing up. Instead of a size x, I was a 27/32(not sure about the leg length, but I remember the 27 inch waist fondly

). The jeans were all in bins according to waist size, so I knew I was a 27 and would find the appropriate leg length in that bin. Today, who knows WHAT size I am! It depends on how the manufacturer wants me to feel, I suppose.
And if there is ONE thing I've learned from What Not To Wear, is that clothes to fit properly NORMALLY need to be tailored regardless of how it is sized by the manufacturer. The same goes for menswear. If I go shopping for work clothes with DH, he gets a pair of pants with a waist 34, even though he is a 32, because the hips fit better and the legs fit better for him (he has a cyclists' body -- small waist, bigger hips/legs), and gets the waist tailored in.
Sizing has NO RELATIONSHIP to having clothes fit you better. NONE. It is designed simply to guide you to an article that may or may not fit. You know if you are a size 12, you won't start trying things on at size 22! But the manufacturers don't really give a flying fig if the size reflects the actual body. They DO care if they sell tons of size 10s.
If people expect off the rack clothes to fit them perfectly, well, they need to get used to disappointment!!!

Kira