The thing with transgender (and nonbinary) fashion is that our cis-normative society has catered certain fits to certain anatomy. This isn't solely a cultural thing - as men and women's chests and crotches are shaped very differently. But there's a lot that can be done to reduce the impact of a person's anatomy when they, e.g., want to dress in a style that's more conventionally associated with the opposite sex. For example, you can design a dress that's feminine without requiring an ample bosom to fill out the top, and there are certain styles that are more effective than others at disguising a bulge in the skirt.
What frustrates me (I was going to say "surprises", but it's really not surprising) is how much commercial, mass-produced pride gear is just conventional men or women's clothing with a transgender pride flag print slapped on it. In a certain sense, a lot of transgender individuals ultimately just want to pass as the gender they identify as - but for a lot of these people, for a significant portion of their journey, it's not always (sometimes, but often not) as easy as putting on clothes that were made for somebody with a different body.
I know transgender customers are an exceedingly small minority, but how common is it, exactly, for cis people to wear clothes printed with pride flags? It's great that allies can show their support, but not at the expense of overlooking the impacted population's ability to boost their own visibility. Or, you know, just to have something to wear. I really think there's untapped potential for fashion that caters to people who want to project a certain gender, while occupying the body of a different sex. Like, that pride flag string bikini might look incredible, but there's no way it's ever going to fit me well enough that I can actually wear it in public...
[description: a feminine male models a skimpy string bikini with transgender pride flag print]
And do you know how hard it is to find thong underwear with the storage capacity to carry a package? You don't even need to be transgender to appreciate the advantages of wearing a thong! I tell you, men really miss out on so much living in a neurotically homophobic culture.