I was offered pajamas on a VS flight LHR-DTW and declined. Serious question: where/how are you supposed to change into these PJ's? There is no way I could change into PJ's in an airplane lav. I'm too tall.
OK, I could do it in the one giant handicapped accessible lav I've seen in a few planes, but that was usually back in Y and I'm not going *gasp* behind the curtain!