I am a 40 D, though with my pregnancy I'm probably up to DD, if not now then by the end of the day probably, sheesh.  It hurts very badly to sleep unsupported right now and I only found relief when sleeping with a belly band (size Medium from Target) around my chest, so I thought this would be the perfect solution.  The bra is incredibly soft and smooth.  I bought the XL, and thankfully the cups have plenty of room to grow.  They're almost too large for now, but even gentle support is nice.  Unfortunately the band fits just slightly snug, so I don't think it will be comfortable throughout the pregnancy even if the cups remain the right size.  If they offered band sizing that would be amazing.  For now it will do and did not bother me during sleep, but it did feel like a relief on my ribs to take it off in the morning and replace with a belly band again.