My own preferences are a bit less...practical, shall we say?  However; sometimes you get the lady what she wants.
With this rather cold winter we're having, an ankle length flannel nightgown does make sense.
I have bought from PajamaGram before, and always check them first, to see if they have what I'm hunting for.
Not a shill, just a satisfied customer, who is loyal to brands that warrant that loyalty.