I wear a longline sports bra with a shelf instead of a real bra 99% of the time. The cups are removable so that makes it feel like… less? Idk how to word that part lol. I don’t love the fact that it’s so long honestly, because I have a tummy it tends to ride up. But I can’t find any shelf bras that aren’t like that. And fits like a tank top, not tight like a compression sports bra. You could also look for “yoga bralette” type things. Yoga sports bras are made for comfort, not for squishing them down.