I want to start going without a bra. But I can't get over my fear. How many other girls go braless?

I recently moved away from home for school and I want to start going braless because It's comfy and I read that it is good for you.
I don't have anywhere close to large breasts just B cups so I am not try to cover much. Growing up my moms view was that any girl that didn't wear a bra in public was a slut. But any time I was at home I went without because it was far more comfy. Did go without sometimes but only while wearing a sweater or a fleece pullover so my mom and no one else could tell. I always loved doing this because of how comfy it was. I started doing it more when i got older but the problem was I could only do it in the winter and i was scared of my mom finding out. Well now I am at college and basically went braless all winter but it is hot now. I have been trying to do it with a t-shirt but can only push my self to do short trips out inside the dorm. It is common to see other girls going without so I would not be out of place but I just can't get over the fear of being judged and called a slut for it. It's stupid because with my breast size you have to really look to tell I don't have a bra on. My friends didn't even know until i told them.

If anyone has any advice to get over my fear it would be nice.
I always wear a bra.
I only go without in sweaters.
I sometimes go without.
I never wear a bra.
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I want to start going without a bra. But I can't get over my fear. How many other girls go braless?
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