First I should say that I've ordered other ToBeInStyle shirts and been dissapointed with their inconsistency in their product... but so far it seems like they only have this shirt in one "brand" so you know what you're getting when you order it.
I bought this to wear in my gym (Sorry I don't have a more full photo of the shirt). So far I've gotten the dark blue, heather grey and olive green. I am 5'4'' and 165lbs and ordered a Large. It fits pretty snug (an XL would have been better) but still comfortable because the shirt is very thin. Don't expect this thing to hide unwanted bumps, bulges, or fat - But you can expect the vneck to be flattering on your chest and the good news is it isn't cut too deep (I personally like to wear my shirts a little lower).
All in all I give it 5 stars. I'm ordering even more colors. (I did this review on my own without a discount or free product, whatever)