So, my gym routine is a lot of lifting and a lot of stretching so I need to be able to move. I ordered this bra one band size up with this in mind.
It fits perfectly, not snug, and when I snap the extra back-tie in, I'm quite comfortably held in place. This bra seperates the breasts so I don't get a uniboob which is common in sports bras.
Be aware: It's not a anti-jiggle bra good for running or aerobics, but it's very good for yoga, pilates, weight lifting etc. as you can move really well in it.
It's so comfortable and gives a good profile it also works as a t-shirt bra! WHen I first tried it on I was so happy with it that I immediatly ordered another one.
In theory, it can be used as your only top when working out, it covers well and is pretty, but I'm not comfortable that undressed so I wear a tank top over it.