I usually wear size L in all other scrubs, so naturally I ordered a size L in this brand.  But alas, these scrubs are not made with boobies in mind.  Therefore, I exchanged for an XL.  I like the fit ok (i.e. boobies are now contained and comfortable), although the shirt length comes down a little low.

In summation, order a size up if you are generous in the tata area.