All the elastic seems to be wearing out on all my pajama bottoms at the same time. And my sweatpants. The PJs are all almost 14 years old, I bought them all at the same time summer 2003. I liked them so bought one in each color.
The sweats may be about the same age.
Everything now falls down when I walk. I don't wear them anywhere but home of course, but still, it's a bit inconvenient.