This bra has no metal, no plastic, no bone. It is a formed bra with some stretch, some firmness. I wear 36b in a regular bra, 38 in a sport bra. The medium is pretty snug. It would look the best under a blouse but is no good to sleep in as med gets confining. After a few wearings, I decided to add about an inch to the length of the straps with my sewing machine.

I also bought a large. I like it better for my purposes which is wearing under a sweatshirt and sleeping in it. It is not quite as smooth looking as the med but is a ton more comfortable. The med was so tight that it formed cleavage which was not what I was looking for but maybe you are.

It is still going to look like you are wearing a sport bra as it is not really a shaping bra... Although not quite as uni boob as the sport bra but close...