NO RESPECT

Can someone please tell me when it became ok to wear pajamas on an airplane? I realize pj's are comfy and airplanes are not, especially when you're stuck in the middle aisle, but come on. There's lazy and then there's just plain disrespectful. It used to be that women wouldn't even go to the grocery store without fixing their hair, putting on nylons and heels, and finishing up with lipstick at the very least, and while that may be too extreme in today's world, so is wearing sleep-wear on a plane. If you have no respect for yourself at least have respect for your fellow passengers who have to look at you.