You look more like a woman than a lot of women. I'm sorry, I don't mean to argue, but from what I see, the photo does not out you. You look fantastic. Many cis female would be (and probably are) very jealous of your fit figure.
Posting a photo of yourself next to a model!?!?!?! My God are we comparing ourselves to models? Airbrushed specimens of perfect humans?
You actually look like more like a woman than my Aunt who is cis female. You have a similar look to her, with you being the prettier one. She has your shoulder and hip issue but much more exaggerated. She has very narrow hips and wide shoulders. She does have gigantic boobs. G cup or more I would guess. Natural, not implants, but I don't think that helps her pass as female any more than if she was small bossomed.
This brings up a quote from a cis gender female. "After your transition you wont look in the mirror and see a perfect, beautiful woman. You'll be just like the rest of us girls. Insecure and seeing, in yourself, a catalog of flaws."
I've been borderline obsessed with transsexualism since I was 15... I'm now 44. A lot of my cis female friends get asked, at some point, if they are transsexuals. My sister, as in biological sister (cis gender) has been asked if she's trans. She's a pretty woman but has a deep voice, is muscular, and has a hint of masculinity here and there, nothing that tips her over line into looking like a man but just a hint.
A good friend of mine, cis female, looks like Sophia Loren at the age of 30 (gorgeous). She's gotten asked several times if she's trans.
I could go on and on. I don't mean to preach but... this post is getting me riled up.
Transsexuality is out today. Front page and center. People are going to get clocked, here and there, as trans whether they are trans or not (in my humble opinion).
Low profile, wide pocket, implants can help bring the shoulder into a better silhouette in my opinion. If the pockets are too narrow it can exaggerate wide shoulders.
The bathing suit in question is a bit boxy to begin with, on any figure. Maybe something that wraps at the waist, has V shapes at the neckline and waist, would give more of an ideal silhouette, although, again, I say you look fantastic.