My hip muscles are much thicker than they were pre-T, so I had a bit of a trade-off. I lost weight, which helped me to lose some fat. I went on T, which shifted fat away from my hips but also built up the muscle in that area. I clearly lost inches in the hips, but when I was at my thinnest, I was running into a problem that a lot of FTMs encounter: I needed a smaller waist size in pants, but they couldn't accommodate my hips just right. So I compromised and found a waist size that was just right overall. They were a little loose without really bunching up, and they fit my butt well.
The problem is that if I had lost more weight, the proportions might have been off. But I didn't think I could lose more because it had been a struggle to get down that far. So I figured that I needed to just maintain the weight I had.
Easier said than done. I regained some of the weight, and now the proportions are definitely off again. When I look in the mirror, I see the hippiness. It's not that noticeable, but I'm looking for it.
I think the trick is to arrive at a particular happy medium that works for your body and your clothes--and learn to live with what you wind up with. If you are taller, that can help immensely. I'm reasonably tall for an FTM, but I'm short as cis guys go. So in my case, I definitely needed T to help me with the proportions.