How are these websites getting my address?

I’ve had several websites send me advertisements in the mail recently.

Like Victoria’s Secret. I’ve never bought anything from there yet, but I looked at their swimsuits online a few times. And today they sent me a catalog of their swimsuits. I never gave them my name or address.

Or this website for a store called “Body Central”. My friend said they were getting a store where she lives in another state.
I’d never heard of it, so I looked it up ONCE and now they send me catalogs. I didn’t even buy anything.

So where are they getting my address? For someone with extreme paranoia and anxiety I can’t stand it.

I even got in trouble with my parents because of it. I’m 17, but they’re really conservative and old and they were shocked that I got a Victoria’s Secret catalog.