No. Definitely not. Unless you've been on HRT for quite a while, unfortunately, it will just go to male areas. I tried this about 11 months into HRT, and yeah, unfortunately, it all went to my stomach.
Basically, when you gain weight, it doesn't matter what hormones are in you, your fat will go to whatever places there are already fat cells. All that happens when you gain and lose weight is that your existing fat cells inflate and deflate. No new ones are created.
The way that HRT redistributes your fat to new gendered areas is that estrogen and testosterone influence where new fat cells are created as old ones die off. About 10% of your body's fat cells die off and are reborn this way every year, so you will indeed slowly, slowly, start to get curves as estrogen dictates that the new fat cells are being born in your hips and boobs and thighs. So the proportions will indeed slowly change. But it takes a long time. Once you've had a few years though, then and only then will you be able to gain weight and have it go to mostly female places.
Women have more body fat because their hormones dictate it, and because their bodies slowly develop that way. Given enough time on HRT every trans woman will end up the same way naturally. But again, it takes time.
