I am so glad I ordered this bra.  After waking up with leaking breasts, I needed to wear a bra at night to hold breast pads, but I wasn't willing to be uncomfortable.  Based on other reviews, I ordered an XL (40DD) and it fits great.  It isn't too tight or too loose- it's perfect.  I wear it most nights and I've had no problems.  It's a great bra for the price and definitely comfortable enough for sleeping.  It's easy to slide over for nighttime nursing too.