These are a great deal for everyday use, exercise and layering.  I have probably bought these 4-5 times over the past two years in various colors.  I always have the black and white on hand for wearing under light sweaters and generally working around the house.  I wear the medium.  I am 5'6" tall and 135 with a 32DD bust.  They are form fitted so if you are looking for something loose definitely go up a size.  They are also fairly sheer in the light colors but I am usually wearing them with a sports bra so it doesn't matter.  They are just great for the gym.

In this batch with the black, grey, pink and green the only color not true to the image is the green.  It's more of a bright apple green, grassy.