These are very pretty, but i have had a few problems with them. out of the package, i found them to be true to size. i think i purchased the pxxs or the pxs. however, even though they are machine washable, i feel that they shrunk upon washing and are now too short (i am barely over 5' tall). also, the elastic waistband keeps twisting within the casing, which drives me crazy. i have to keep straightening it. i think there are better options for sleep pants.