Of course, I think it's not bad to dress professionally. After all, a better attitude will give teachers a better image. If you want to wear it, you can wear that jumpsuit with black letters on a white background, of course, you can also wear a tight vest+dance pants, and you can also wear tight shorts in hot weather. Shoes, just ordinary sports shoes, must be white or black in color, so you can't wear flesh-colored shoes, which will probably be regarded as an alternative in class ~ ~ ~
Gymnastics clothes+pantyhose, I advise you to wear them when practicing at home and in class, because I'm afraid you will be discriminated against. Of course, if you change pantyhose into tights, such as toe pants (for men to dance). Feel better, because tights can highlight your lines and teachers can help correct your movements!