Audrey,
I hope you enjoy your ballet classes as much as I did my jazz/ballet classes I took with my gf for two years. I have read Jamie's accounts over the years and, though Jamie is one serious student, I found most adult classes a lot more relaxed. Mine was mainly ladies who were wanting to relive dance like they enjoyed in their youth as a form of exercise to keep in shape and enjoy. So it's not something to get uptight about in my opinion.
As far as what to wear be it male tights, feminine tights, tights and leotards, wrap skirt, wear what you want. I attended classes with my girlfriend starting out in a ladies solid black shortsleeved leotard and matching tights and later wore some items my girlfriend gifted me. We all had fun and the ladies included me just like one of them. I would recommend that whatever you want to dress in for class, wear it all to your first class confidently, and that is how they will expect you to be dressed from then on. If you are a bit over the top, they will politely tell you and give you a chance to dial it back a bit. Men are welcome in most classes any way they can get them and certainly don't want to discourage you in any way. I think Jamie will agree on that. Above all, enjoy and let us know how it goes.
