It seems there is a lot of adult beginner ballet discussion about what to wear to class. Pink tights versus black, tights over or under, footed or footless, leotard or no leotard, which warm-ups, etc.
I wear a leotard, usually black, and tights, also usually black. Why so much black? Because it was the company uniform for Other Movement. Also as a New Yorker, I pretty much live in black all the time any way, and this way I can just layer my civilian clothes over! I have a few color leotards...grey is a color, right? I am actually slowly collecting more color ones, as I sometimes indulge in getting custom leos nowadays, and basic black seems kind of a waste with custom. Cutwise, I don't like anything with too high of a neck (no mock turtlenecks for me), and tend towards leos with open or low backs. No halters because I feel they make my shoulders look too broad.
I wear transition or footless tights, because I wear pink (canvas, split sole) shoes, and black footed tights with pink shoes is a no. Sometimes I wear nude tights. Never pink though, it looks weird with my (olive) skin tone. I always wear tights under, because gussets look strange. Once in a while I'll wear a "biketard" (awful word) with no tights at all...a more contemporary feel.
I don't wear ballet skirts because I feel like they shorten the leg line, and I like to clearly see what my hips are doing. I usually don't wear shorts, again because of the leg line thing, but I'll wear little (black) shorts once in a while because a few of my leotards have a weirdly cut leg. I try to avoid those leotards, but sometimes fall behind on doing laundry (and by "doing laundry" I mean taking it to the laundromat a block away for them to wash and fold for me...).
In winter I will wear legwarmers (black) if it's cold in the studio, but never ones that cover my knees, because I don't want to hide any problems there. A shrug (black) sometimes makes an appearance, and I also have a few "tops" made out of old (black) tights with the crotch cut out.
OH, and I wear underwear under my tights. I just feel better with underwear.
There. Everything you (n)ever wanted to know about what I wear to ballet class as an adult beginner.