Why do fashion bloggers get free stuff from stores?

Just curious. And the answer’s probably obvious, but I want to justify it.
A lot of my fave blogs get free clothes in the mail. Usually the free stuff comes from online stores.

Advertising!
Fashion blogs usually have a ton of loyal followers and readers take there favorite bloggers advice because they like the way they dress and they sense of style. If a blogger gives something a good review and shows some pictures of themselves wearing it, their readers start coveting. And obviously someone who spends part of their day reading a fashion blog is serious about clothes. It’s super easy advertising to their best customers

- http://stripesofsugar.blogspot.com