OK I am a size 18/20 46 DDD woman, so I ordered a 3X...I love that this babydoll fit my tummy The waistband on this nightie is VERY stretchy. But it barely covers my nipples. The cups are maybe a B at best. My breasts spill out of the cups EVERYWHERE - over, under, out the sides...everywhere. The panties are small and slightly uncomfortable. The panties it comes with is made of the same material as the babydoll itself. The material it is made out of has a silky, soft feel - feels so good on the skin. It is very pretty just not made for busty gals.