Personally, it would mean my mom had lost a lot of weight and I would be very happy for her.
I think the human body is the most beautiful thing in the world. I don't see any reason at all to be ashamed of it. I have myself posed nude for photographers (once outdoors with spectators) and art students. Nothing at all wrong with it and I'm not ashamed at all. I wouldn't be ashamed if my mother did it or any other members of my family.
Why would I be?
Humans sure can be beautiful but I prefer black leopards and cougars. Now, there are bodies.
;-)