hello ❤️
my son is a senior in high school and will be attending prom with his boyfriend in about 3 months. he hasn't decided what exactly he's going to wear, but just in case it's a tux or a suit, I'm trying to get my ducks in a row because idk where to even begin. 🤦
searching "rent a tux near me" gets me all kinds of cis-man focused stuff, adding "trans man" onto the end didn't get better results. I'm sure there are all kinds of considerations to keep in mind, but idk the first thing about getting a tux for anyone at all, let alone a person with a different body shape than Average Dude.
I might be over-complicating this and worrying too much (haha me? 😅🙃 never!) please let me know if that's the case. it would be a huge relief!
I know we need to start with measurements; I'm fairly confident about taking them, since I've previously successfully measured him, my husband, and myself.
after that, I'm totally lost. his body shape is becoming more blocky and less curvy, but he's still got a little bit of hip that seems like it might be difficult to fit in suit pants. he has binders that he finds comfortable, so I think shirts and jackets might not be too difficult to fit, but heat might be an issue? he gets grumpy when he's too hot, just like his mom 🥰
we live in rural Ohio, so I don't feel comfortable taking him to a random rental place; most of the time, people are nice to us, but I don't want to risk it for prom. we can drive about 2 hours to get to Columbus, OH, which has a pretty large queer community and probably has a safer place to go for fitting than anywhere closer.
all of your thoughts, directions, suggestions, advice, encouragement, reprimands, and jokes are welcome 
thank you.
One thing that's nice about a suit or a rented tux is that they should be able to mix and match sizes. It might be possible to rent something from like a Men's Warehouse without going in person if you can take measurements. Suit jackets in particular come in long, regular, and short lengths in addition to the numbered sizing, which might help find something that fits well. I'm a short, stocky build so I've always struggled to find well-fitting formal wear as well. Suit separates are also good in this regard, since the size can be mixed and matched.
As for the extra pieces, I think it would be best to go with no vest, cummerbund or nothing instead, and bow tie over neck tie. Both a vest and a neck tie are killer on the heat equation. Bow ties don't have to be nearly as tight as a neck tie so it's way better on the heat and comfort. One you tie yourself can be an especially nice touch as people begin adjusting to the warmth.
A tip for the pants if you have to get too large a waist to get over his hips: suspenders. A pair of clip suspenders will help keep the pants up if you have to get a size that's too large in the waste.
I think it's important to recognize that even at this age, both cis and trans men have all kinds of different body shapes, and the average cis male dresser doesn't think about ill fitting clothing at all. You are way ahead of the curve thinking about it now, and the resources available should be sufficient.