Whatever the season, whatever the weather, it is safe to say that most of us will still be wearing a pair of jeans in some form. Since the 1950s, when denim moved from being a fabric made for workwear, to a wardrobe staple made cool by the likes of Marilyn Monroe, James Dean and Brigitte Bardot, jeans have become a must have for any woman, worn casually by day, and dressed up by night. And, right at this moment, there are simply so many styles available that we can safely say we are almost in the midst of a denim explosion. But what jeans to choose? The ladies of the…