I don't think boobs being where they are supposed to and not pointing down...means someone is superboob! Lol.
I have a larger chest. A large D cup. I should say, it's large for my size. I am very petite, about 100 pounds. Although my boobs haven't succumbed to age and gravity (yet,) I do think it would be obvious, if I weren't wearing a bra. I'm J. so small, and they'd J. be so...out there! And, I can't stand the bounce factor! Also, I do get chilled. I don't need the world to know. I think tube tops are tacky on everyone. You can easily hide bras under one shoulder shirts and strapless dresses, I do! My wedding dress was strapless and low on my back. I found a bra that sat very low, that I have worn with many things since. You'd be amazed at the contraptions you can find in a specialty bra store. A bra for every occasion, as I like to say. I also have a dress with a very supportive built in bra.