The chances are you will not find a doc that will give you a prescription for hormones just to help you obtain your desired look. If you search the internet about it I'm sure you'll find a large number of sites that talk about the negative effects of HRT in genetic women that wanted to reduce the effects of menopause.
From the Mayo clinic...
http://www.mayoclinic.com/health/hormone-therapy/WO00046QuoteWhat are the risks of hormone therapy?
In the largest clinical trial to date, the combination estrogen-progestin (Prempro) increased the risk of certain serious conditions.
According to the study, over one year, 10,000 women taking estrogen plus progestin might experience:
* Seven more cases of heart disease than women taking a placebo
* Eight more cases of breast cancer than women taking a placebo
* Eight more cases of stroke than women taking a placebo
* Eighteen more cases of blood clots than women taking a placebo
* An increase in abnormal mammograms, particularly false positives
The study found no increased risk of breast cancer or heart disease among women taking estrogen without progestin. Over one year, however, 10,000 women taking estrogen alone might experience:
* Twelve more cases of stroke than women taking a placebo
* Six more cases of blood clots in the legs than women taking a placebo
* An increase in mammography abnormalities
The effect of hormone therapy on mammograms is important, because it suggests that women on hormone therapy may need more frequent mammograms and additional testing.
If you are considering changing how you look, you might want to talk to your doctor first to see if he/she might have any ideas.
There are also a lot of different padded body shapers you could look into (around $50 usd) that you could use for a 'special night out' if needed.
Something else to think about... (added after original post)...
If you aren't already taking birth control pills, some brands contain both oestrogens and progestins. These have been known to cause some women to gain a little weight, and chances are the hips might be a good place where the extra weight might want to settle.