Rusty bra straps a.k.a. How often do you replace?

[SparePartz]

{Sigh} The clips on my favourite bra are going rusty. I suppose that means I need a new one or is there some trick to save it? Else I'll have to decide between the sludge green one on sale or the nice colour full price.
How often do (should?) you replace bras?

It's funny I came across your post OP. The underwire on my favourite black bra started poking out over the weekend and I had to get rid of her 😪
The thing is I have many bras but I'll only stick to one at a time. I think something's wrong with me.