Hi dulciana
To my knowledge no diet will target weight loss from a specific area although I am happy to be proved wrong!
As honeybun says once you get to menopause and the time leading up to it - the pattern of fat distribution changes. This is what it says on this site:
Weight distribution
When women gain weight after the Menopause the distribution of where it settles alters. An extra pound before the pre-menopause will settle evenly over hips, bottom, thighs and arms. After the menopause it ALL goes round the middle! Hence the term "middle age spread" or " midriff". A fairly modest weight gain can thus result in a change of dress size.http://www.menopausematters.co.uk/weightgain.phpEven very skinny women find that their waist size increases despite having almost no extra fat. If you lose weight you will lose it overall. However you can help your appearance by targetting
exercises on this area so that you can hold yourself upright and keep your stomach pulled in , firm up the buttocks etc. I go to a body conditioning class and Pilates which has strengthened my muscles in this area enormously and has the added benefit of increasing basal metabolism so you don't put on weight so easily (muscle burns more calories at rest than fat).
As far as clothes are concerned - well say goodbye to anything with a wasitband! I'm not sure what classic clothes are but dropped waistlines are the way to go for jeans/trousers and skirts - M&S seem to cater for this type of figure but go too far the other way - I always find their jeans far too baggy - they think I've totally lost my shape

.
Maybe HRT helps a little - the added oestrogen perhaps helps to maintain a bit of a waist-line.
As for the 5:2 diet. My verdict is it is yet another of these gimmicky diets that have companies etc jumping on the bandwagon to flog their products - sorry Winterose!!
Here is what the NHS has to say about it:
http://www.nhs.uk/news/2013/01January/Pages/Does-the-5-2-intermittent-fasting-diet-work.aspxMy view is that it doesn't suit women very well because of the low blood sugar - but by all means try it for a bit! I did try the alternate day fasting one ( for a fortnight) and I was in pain from hunger, couldn't sleep and didn't have the energy to do anything else much, and thought about food
all the time! Hurdity x