What should I wear to my new choir group?

I’ve joined a new choir group for men and women and people of all ages. Backgrounds, walks of life. So I’m wondering, should I dress nicely at all, in case I meet a cute guy there? Some lip plumping gloss and a nice sweater and fancy woollen cardigan and nice pants? Or should I just wear my warmest sweater, but one in a pretty colour and yoga pants?

What should I wear to my new choir group?
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