Hey, Beth, welcome to the site!
First of all, I am not a MtF but having grown up as a "female" I can offer some suggestions for you.
Eat chocolate...it always goes straight to my hips, ha ha!
But seriously, I can't offer much for diet or exercise, but what I can offer is some suggestions on clothing. What I suggest is subtracting attention from your hips. What I found really "brought out curves" or my waist (I will tell you, despite having wide hips, my build was masculine even for a female) was shirts that have an elastic band towards the waist, similar to maternity but not exactly, I think it's called babydoll style.

Not one where the elastic ends below the bust, but towards the middle of the waist, where the body should naturally curve inward on a female, that's where you want the elastic to sit (otherwise it could have the opposite effect and make you look tapered down, like you don't want).
Flare-style jeans might also help, because they flare out at the bottom and almost give the jean legs an hourglass shape, which would bring out your hips more as well.
Good luck! That's all I know for now but if you need anything feel free to message me.