Take the ballet class. It should be a beginning, adult one. Although you have a lot of ballet experience, it’s been a long time. Don’t worry about anyone judging you for your weight. Wear a skirt over the leotard if that makes you feel more comfortable. The more you do the ballet, the better shape you will get into. No one expects you to be a prima ballerina. The adult classes are for enjoyment and exercise.

Be careful, though. I went back to dance classes in my 40’s and stupidly hurt myself. I pulled a muscle and really haven’t recovered. I also got frustrated with myself because I wasn’t as good as I thought I had been as a kid. I quit, but it was mostly because I got hurt.

Now I do gentler exercise and won’t try anything too strenuous in my advancing age. But don’t let me discourage you. I say go for it!