Comments on my body from strangers

This is twice in the last week now that complete strangers have taken it upon themselves to make a comment about my body size, directly to my face. Happened at work from a customer and then again this morning at the gym. This is not something I would ever do. Because:

a. I received a lot of hurtful comments about my weight as a child and so I know how it feels, and I would never do this to someone else.

b. Common sense/etiquette.

c. You DO NOT comment on someone else’s body; it’s none of your business.!!! I don’t even do this to my own daughter; I have only ever told her she’s beautiful, and I only ever will. Not even a body comment, just a comment about her whole self.

So I’m wondering if there is a sign posted to my back right now that says “Please Critique Me”?! WTF!