I can't show any cleavage at work so I have to find ways to make my clothes school appropriate while not having 2 different wardrobes: one for school and one for comfort.  I've been wearing spaghetti strap t-shirts under my other shirts but I always feel confined; and hot.  This has worked great!  I've only had it a week but it works great underneath my shirts that show a little too much skin without making me feel hot and trapped in my own clothes.  I will still have to be careful bending over... it doesn't really hug the skin... but it will work great for me!