Any chance these might be Billie Burke pajamas? Probably not but it would have been nice! These pajamas came in this carrying case with a handle. The pink pocket inside the box is the same color as the pajamas but not the same fabric. Not sure if that matters. The pajamas are some sort of satin rayon I think. At one point the top had elastic at the waist but it’s gone on one side and extremely brittle on the other. It snaps closed along the ivory trim. No other closures. The pants are elastic and wide legged. The box is very warped and the satin holding the snap on top is shattered and fragile. Thanks for your help!