Hun, this sounds like a YMMV type of thing.
I am not on HRT yet, either, but I think if you're talking about strictly photos, plenty of girls use weird tricks to look more 'feminine' even when they may not be the most hour-glass or whatever out there. And as others have said, women come in so many different shapes and sizes.
But in RLE, it's going to come down to more than just appearance, I think. Basically, if you 'present' as female, people don't need to question or pry any further than that. Like with dress, mannerisms, voice, etc.
I recently got asked by this guy at one of my jobs the other day if I play volleyball. It was a weird question, and I'm not used to those quite yet. But after asking him a bit more about it, my build wasn't quite femme for obvious reasons, but I presented as female in all other aspects, so he didn't question if I was a girl or not, just felt like I had the build of a volleyball player.